Geologic Time Scale: Early Cretaceous Period

(145 to 100.5 million years ago)

The Cretaceous Period is the third and final period of the Mesozoic and the longest period of the Phanerozoic Eon. The period as first defined by Belgian geologist Jean d’Omalius d’Halloy in 1822 as the Terrain Cretace, using starta (layers) in the Paris Basin and names for the extensive beds of chalk(calcium carbonate deposited by the shells of marine invertebrates, principally coccoliths), found in the upper Cretaceous of Western Europe. The name is derived from the Latin creta meaning “chalk”, which is abundant in the later half of the period.

During the Cretaceous, the late-Paleozoic-to-early-Mesozoic supercontinent of Pangaea completed its tectonic breakup into the present-day continents, although their positions were substantially different at the time. The Earth’s Climate was warmer than today, and sea level was much higher. The end of the Cretaceous period (along with the Mesozoic) ended with the Cretaceous-Paleogene extinction event (formerly known as the KT bountary). 

Albian Age/Stage

Early Cretaceous: 113.0 to 100.5 million years ago

The Albian is the final stage of the early or lower Cretaceous Period. The name was first purposed in 1842 by Alcide d’Orbigny after Alba, the Latin name for the River Aube in France.

North American Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Acrocanthosaurus “High spined lizard”
Classification: Family: Carcharodontosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA, Oklahoma, Antlers Formation, and the Texas, Twin Mountains Formation
Size: 11.5 meters long
Diet: Carnivore
 
Genus: Deinonychus “terrible claw”
Classification: Family: Dromaeosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA,‭ ‬Antlers Formation and Cloverly Formation
Size: 3.4 meters long
Diet: Carnivore
 
Genus: Tenontosaurus “Sinew lizard”
Classification: Clade: Iguanodontia
Time: Cretaceous (Aptian to Albian)
Locality: Western North America
Size: 6.5 to 8 meters long
Diet: Herbivore
Genus: Iguanodon “Iguana tooth
Classification: Clade: Iguanodontia – Family: Iguanodontidae
Time: Cretaceous (Barremian to Aptian and Cenomanian?)
Locality: Initially associated with Western Europe,‭ ‬attributed remains are now known in Africa,‭ ‬Asia and North America
Size: 10 meters long
Diet: Herbivore
Genus: Sauropelta “lizard shield”
Classification: Family: Nodosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA: Wyoming and Montana – Cloverly Formation
Size: 5 meters long
Diet: Herbivore
Genus: Borealopelta ‭(‬‭)‬
Classification: Family: Nodosauridae
Time: Cretaceous (Albian)
Locality: Canada: Alberta
Size: 6.6 meters long
Diet: Herbivore
Genus: Gastonia “Gaston’s thing”
Classification: Family: Nodosauridae – Subfamily: Polacanthinae
Time: Cretaceous (Barremian to Albian)
Locality: USA: Utah – Cedar Mountian Formation
Size: 5 meters long
Diet: Herbivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

European Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore
Genus: Iguanodon “Iguana tooth
Classification: Clade: Iguanodontia – Family: Iguanodontidae
Time: Cretaceous (Barremian to Aptian and Cenomanian?)
Locality: Initially associated with Western Europe,‭ ‬attributed remains are now known in Africa,‭ ‬Asia and North America
Size: 10 meters long
Diet: Herbivore
Name: Ornithocheirus “Bird hand”
Classification: Suborder: Pterodactyloidea – Family: Ornithocheiridae
Time: Cretaceous (Albian)
Locality: England – Cambridge Greensand, Brazil – Santana Formation
Size: 5 m wingspan
Diet: Piscivore

South American Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Irritator “Irritation”
Classification: Subfamily: Spinosaurinae
Time: Early Cretaceous (Albian)
Locality: Brazil – probably the Santana Formation
Size: 8 meters long
Diet: Carnivore
 
Genus: Genyodectes “Jaw biter”
Classification: Family: Ceratosauridae
Time: Early Cretaceous (Aptian/Albian?)
Locality: Argentina‭ ‬-‭ ‬Cerro Barcino Formation,‭ ‬Cerro Castaño Member
Size: Unknown meters long – only partial skull found
Diet: Carnivore
Genus: Patagotitan“Patagonian giant”
Classification: Clade: Titanosauria – Clade: Lognkosauria
Time: Cretaceous (Albian)
Locality: Argentina,‭ ‬Chubut Province‭ ‬-‭ ‬Cerro Barcino Formation
Size: 37 meters long
Diet: Herbivore
Genus: Agustinia “Named after Agustin Martinelli, the discoverer
Classification: Superfamily: Diplodocoidea/Titanosauridae?
Time: Cretaceous (Aptian to Albian)
Locality: Argentina,‭ ‬Neuquen Province‭ ‬-‭ ‬Lohan Cura Formation
Size: 15 meters long
Diet: Herbivore
 
Name: Dsungaripterus “Juuggar basin wing”
Classification: Suborder: Pterodactyloidea – Family: Dsungaripteridae
Time: Cretaceous (Aptian to Albian)
Locality: China – Juuggar Basin
Size: 3 to 3.5 m wingspan
Diet: Shellfish
 
Name: Tupuxuara “Familiar spirit”
Classification: Suborder: Pterodactyloidea – Family: Thalassodromidae
Time: Cretaceous (Albian)
Locality: Brazil – Santana Formation
Size: 5.5 m wingspan
Diet: Piscivore
Name: Tropeognathus “Keel jaw”
Classification: Suborder: Pterodactyloidea – Family: Ornithocheiridae
Time: Cretaceous (Aptian to Albian)
Locality: Brazil – Santana Formation
Size: 8 m wingspan
Diet: Piscivore
 
Name: Pterodaustro “Southern wing”
Classification: Suborder: Pterodactyloidea – Family: Ctenochasmatinae
Time: Cretaceous (Albian)
Locality: Argentina, San Luis Province – Lagarcito Formation, Chile – Santa Ana Formation
Size: 2.5 m wingspan
Diet: Filter feeder
Name: Tapejara “Ancient Entity”
Classification: Suborder: Pterodactyloidea – Family: Tapejaridae
Time: Cretaceous (Albian)
Locality: Brazil – Santana Formation
Size: 3.5 m wingspan
Diet: Piscivore, possible Fugivore
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore

African Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Spinosaurus “Spine lizard”
Classification: Subfamily: Spinosaurinae
Time: Cretaceous (Albian to Cenomanian)
Locality: North Africa, particularly Egypt – Bahariya Formation, and Morocco – Kem Kem Beds
Size: 12.6 to 18 meters long
Diet: Piscivore/Carnivore
 
Genus: Carcharodontosaurus “Shark toothed lizard”
Classification: Family: Carcharodontosauridae
Time: Cretaceous (Albian to Cenomanian)
Locality: Algeria – Continental Intercalaire Formaton, Brazil – Alcantara Formation?, Egypt – Baharije Formation, Mut Formation, Morocco – Aoufous Formation, Kem Kem Formation, Niger – Continental Intercalaire Formation, Echkar Fomation, and Tunisia – Chenini Formation, Continental Intercalaire Formation.
Size: 12 to 13 meters long
Diet: Carnivore
 
Genus: Eocarcharia Dawn shark‭
Classification: Clade: Carcharodontosauria – Family: Carcharodontosauridae
Time: Cretaceous (Aptian to Albian)
Locality: Niger‭ ‬-‭ ‬Elrhaz Formation
Size: 6 to 8 meters long
Diet: Carnivore
Genus: Nigersaurus “lizard from Niger”
Classification: Family: Rebbachisauridae
Time: Cretaceous (Aptian or Albian)
Locality: Africa, Niger, Elrhaz Formation.
Size: 9 meters long
Diet: Herbivore
 
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Name: Pterosaur “winged reptile” (No official bionomial species name)
Classification: Suborder: Pterodactyloidea – Family: …
Time: Cretaceous (Albian)
Locality: Southern Sahara
Size: 3 m wingspan
Diet: Carnivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

Asian Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Nanshiungosaurus “Nanshiung lizard”
Classification: Superfamily: Therizinosauroidea
Time: Cretaceous (Barremian to Campanian)
Locality:  China‭ ‬-‭ ‬Chijinbao Formation,‭ ‬Nanxiong Formation,‭ ‬Yuanpu Formation.
Size: 5 meters long
Diet: Herbivore
Genus: Wuerhosaurus “Wuerho lizaed”
Classification: Family: Stegosauridae – Subfamily: Stegosaurinae
Time: Cretaceous (Valanginian to Albian)
Locality: China,: ‬Xinjiang‭ ‬-‭ ‬Tugulu Group,‭ ‬Inner Mongolia‭ ‬-‭ ‬Ejinhoro Formation
Size: 5 to 7 meters long
Diet: Herbivore
Genus: Xiongguanlong “Xiongguan dragon”
Classification: Superfamily: Tyrannosauroidea
Time: Cretaceous (Aptian to Albian)
Locality: China, Gansu Province
Size: 4 to 4.5 meters long
Diet: Carnivore
 
Genus: Koreaceratops “Korea horn face
Classification: Suborder: Ceratopsia
Time: Cretaceous (Albian)
Locality: South Korea – Tando Basin
Size: Uncertain meters long
Diet: Herbivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

Australian Albian Stage Early Cretaceous: 113.0 to 100.5 million years ago

Genus: Leaellynasaura “Leaellyn’s lizard
Classification: Family: Hypsilophodontidae
Time: Cretaceous (Aptian to Albian)
Locality: Australia, Victoria
Size: 2 meters long
Diet: Herbivore
Genus: Muttaburrasaurus “Muttaburra lizard
Classification: Clade: Iguanodontia – Family: Rhabdodontidae
Time: Cretaceous (Albian to early Cenomanian)
Locality: Australia, Queensland – Mackunda Formation, possibly also New South Wales‭ ‬-‭ ‬Lightning Ridge
Size: 7 meters long
Diet: Herbivore
Name: Kronosaurus ‭ “Kronus lizard‭ ‬-‭ ‬after the king of the Greek Titans‭‭”
Species: K.‭ ‬queenslandicus‭ (‬type‭)‬,‭ ‬K.‭ ‬boyacensis
Classification: Superorder: Order: ‬Plesiosauria – Family: Pliosauridae
Size: 9‭ ‬to ‬10‭ ‬meters long.‭ ‬Skull‭ ‬2.7‭ ‬meters long
Known locations: Australia and‭ ‬Colombia
Time period: Early Cretaceous (Aptian to Albian)
Diet: Carnivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

Aptian Age/Stage

Early Cretaceous: 121.4 to 113.0 million years ago

The Aptian is named after the small city of Apt in the Province region of France in 1840 by French paleontologist Alcide d’Orbigny.

North American Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Acrocanthosaurus “High spined lizard”
Classification: Family: Carcharodontosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA, Oklahoma, Antlers Formation, and the Texas, Twin Mountains Formation
Size: 11.5 meters long
Diet: Carnivore
 
Genus: Deinonychus “terrible claw”
Classification: Family: Dromaeosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA,‭ ‬Antlers Formation and Cloverly Formation
Size: 3.4 meters long
Diet: Carnivore
 
Genus: Gastonia “Gaston’s thing”
Classification: Family: Nodosauridae – Subfamily: Polacanthinae
Time: Cretaceous (Barremian to Albian)
Locality: USA: Utah – Cedar Mountian Formation
Size: 5 meters long
Diet: Herbivore
Genus: Sauropelta “lizard shield”
Classification: Family: Nodosauridae
Time: Cretaceous (Aptian to Albian)
Locality: USA: Wyoming and Montana – Cloverly Formation
Size: 5 meters long
Diet: Herbivore
Genus: Tenontosaurus “Sinew lizard”
Classification: Clade: Iguanodontia
Time: Cretaceous (Aptian to Albian)
Locality: Western North America
Size: 6.5 to 8 meters long
Diet: Herbivore
Genus: Iguanodon “Iguana tooth
Classification: Clade: Iguanodontia – Family: Iguanodontidae
Time: Cretaceous (Barremian to Aptian and Cenomanian?)
Locality: Initially associated with Western Europe,‭ ‬attributed remains are now known in Africa,‭ ‬Asia and North America
Size: 10 meters long
Diet: Herbivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

European Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Mantellisaurus “Mantell’s lizard
Classification: Clade: Hadrosauriformes
Time: Cretaceous (Barremian to Aptian)
Locality: England, Isle of Wight – Wessex Formation
Size: 7 meters long
Diet: Herbivore
Genus: Iguanodon “Iguana tooth
Classification: Clade: Iguanodontia – Family: Iguanodontidae
Time: Cretaceous (Barremian to Aptian and Cenomanian?)
Locality: Initially associated with Western Europe,‭ ‬attributed remains are now known in Africa,‭ ‬Asia and North America
Size: 10 meters long
Diet: Herbivore
Name: Anhanguera “Old devil”
Classification: Suborder: Pterodactyloidea – Family: Anhanguera
Time: Cretaceous (Aptian)
Locality: Brazil – Santana Formation, Australia, Russia, United Kingdom – Cambridge Greensand
Size: 4.5 m wingspan
Diet: Piscivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

Asian Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Sinotyrannus “Chinese tyrant”
Classification: Superfamily: Proceratosauroidea
Time: Cretaceous (Aptian)
Locality: China,‭ ‬Liaoning Province‭ ‬-‭ ‬Jiufotang Formation
Size: 9 to 10 meters long
Diet: Carnivore
Genus: Caudipteryx “tail feather”
Classification: Family: Caudipteridae
Time: Cretaceous (Aptian)
Locality: China, Liaoning Province – Yixian Formation
Size: 1 meters long
Diet: Omnivore?
 
Genus: Beipiaosaurus “Beipiao lizard”
Classification: Superfamily: Therizinosauroidea
Time: Cretaceous (Aptian)
Locality: China, Liaoning province – Yixian Formation
Size: 2.2 meters long
Diet: Herbivore
Genus: Sinosauropteryx “Chinese lizard wing”
Classification: Family: Compsognathidae
Time: Cretaceous (Barremian to Aptian)
Locality: China, Liaoning Province – Yixian Formation
Size: 107 centimeters long
Diet: Carnivore
 
Genus: Yutyrannus “Feathered tyrant”
Classification: Superfamily: Tyrannosauroidea
Time: Cretaceous (Aptian)
Locality: China, Liaoning Province – Yixian Formation
Size: 9 meters long
Diet: Carnivore
 
Genus: Microraptor “small thief”
Classification: Clade: Microraptoria
Time: Cretaceous (Aptian)
Locality: China, Liaoning Province
Size: 1 meters long
Diet: Carnivore
 
Genus: Psittacosaurus “parrot lizard
Classification: Suborder: Ceratopsia – Family: Psittacosauridae
Time: Cretaceous (Barremian to Aptian)
Locality: China, Mongolia, and Russia. Possibly also Thailand
Size: 2 meters long
Diet: Herbivore
Genus: Xiongguanlong “Xiongguan dragon”
Classification: Superfamily: Tyrannosauroidea
Time: Cretaceous (Aptian to Albian)
Locality: China, Gansu Province
Size: 4 to 4.5 meters long
Diet: Carnivore
 
Genus: Nanshiungosaurus “Nanshiung lizard”
Classification: Superfamily: Therizinosauroidea
Time: Cretaceous (Barremian to Campanian)
Locality:  China‭ ‬-‭ ‬Chijinbao Formation,‭ ‬Nanxiong Formation,‭ ‬Yuanpu Formation.
Size: 5 meters long
Diet: Herbivore
Genus: Wuerhosaurus “Wuerho lizaed”
Classification: Family: Stegosauridae – Subfamily: Stegosaurinae
Time: Cretaceous (Valanginian to Albian)
Locality: China,: ‬Xinjiang‭ ‬-‭ ‬Tugulu Group,‭ ‬Inner Mongolia‭ ‬-‭ ‬Ejinhoro Formation
Size: 5 to 7 meters long
Diet: Herbivore
Genus: Siamosaurus 
Classification: Subfamily: Spinosauridae
Time: Early Cretaceous (Barremian to Aptian)
Locality: Thailand
Size: Unknown meters long – known for teeth
Diet: Piscivore/Carnivore
Genus: Ichthyovenator “Fish hunter”
Classification: Subfamily: Baryonychinae
Time: Early Cretaceous (Aptian)
Locality: Laos, Savannakhet Province – Gres superieurs Formation
Size: 7.5 to 9 meters long
Diet: Piscivore
 
Name: Anhanguera “Old devil”
Classification: Suborder: Pterodactyloidea – Family: Anhanguera
Time: Cretaceous (Aptian)
Locality: Brazil – Santana Formation, Australia, Russia, United Kingdom – Cambridge Greensand
Size: 4.5 m wingspan
Diet: Piscivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore
Name: Guidraco  “ghost dragon‭
Classification: Suborder: Pterodactyloidea – Family: Pteranodontoidea/Ornithocheiridae‭?
Time: Cretaceous (Aptian)
Locality: China,‭ ‬Liaoning Province‭ ‬-‭ ‬Jiufotang Formation
Size: Wingspan uncertain due to lack of remains.‭ ‬Skull is‭ ‬38‭ ‬centimetres long
Diet: Piscivore

African Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Suchomimus “Crocodile mimic”
Classification: Subfamily: Baryonychinae
Time: Early Cretaceous (Aptian)
Locality: Niger – Elhraz Formation
Size: 10 meters long
Diet: Carnivore
 
Genus: Eocarcharia Dawn shark‭
Classification: Clade: Carcharodontosauria – Family: Carcharodontosauridae
Time: Cretaceous (Aptian to Albian)
Locality: Niger‭ ‬-‭ ‬Elrhaz Formation
Size: 6 to 8 meters long
Diet: Carnivore
Genus: Nigersaurus “lizard from Niger”
Classification: Family: Rebbachisauridae
Time: Cretaceous (Aptian or Albian)
Locality: Africa, Niger, Elrhaz Formation.
Size: 9 meters long
Diet: Herbivore
 
Genus: Ouranosaurus “brave lizard
Classification: Clade: Hadrosauriformes
Time: Cretaceous (Aptian to Cenomanian)
Locality: Africa,‭ ‬Niger‭ ‬-‭ ‬Echkar Formation. Specimens also known from other locations in Africa
Size: 7 to 8 meters long
Diet: Herbivore
Genus: Malawisaurus “Malawi lizard”
Classification: Superfamily: Titanosauroidea – Clade: Lithostrotia
Time: Cretaceous (Aptian)
Locality: Africa,‭ ‬Malawi – Dinosaur Beds Formation
Size: 16 meters long
Diet: Herbivore
 
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

South American Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Genyodectes “Jaw biter”
Classification: Family: Ceratosauridae
Time: Early Cretaceous (Aptian/Albian?)
Locality: Argentina‭ ‬-‭ ‬Cerro Barcino Formation,‭ ‬Cerro Castaño Member
Size: Unknown meters long – only partial skull found
Diet: Carnivore
Genus: Amargosaurus “Amarga lizard
Classification: Family: Dicraeosauridae
Time: Cretaceous (Barremian to Aptian)
Locality: Argentina, Neuquen province – La Amarga Formation
Size: 10 meters long
Diet: Herbivore
 
Genus: Agustinia “Named after Agustin Martinelli, the discoverer
Classification: Superfamily: Diplodocoidea/Titanosauridae?
Time: Cretaceous (Aptian to Albian)
Locality: Argentina,‭ ‬Neuquen Province‭ ‬-‭ ‬Lohan Cura Formation
Size: 15 meters long
Diet: Herbivore
 
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Name: Tropeognathus “Keel jaw”
Classification: Suborder: Pterodactyloidea – Family: Ornithocheiridae
Time: Cretaceous (Aptian to Albian)
Locality: Brazil – Santana Formation
Size: 8 m wingspan
Diet: Piscivore
 
Name: Dsungaripterus “Juuggar basin wing”
Classification: Suborder: Pterodactyloidea – Family: Dsungaripteridae
Time: Cretaceous (Aptian to Albian)
Locality: China – Juuggar Basin
Size: 3 to 3.5 m wingspan
Diet: Shellfish
 
Name: Anhanguera “Old devil”
Classification: Suborder: Pterodactyloidea – Family: Anhanguera
Time: Cretaceous (Aptian)
Locality: Brazil – Santana Formation, Australia, Russia, United Kingdom – Cambridge Greensand
Size: 4.5 m wingspan
Diet: Piscivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore

Australian Aptian Stage Early Cretaceous: 121.4 to 113.0 million years ago

Genus: Australovenator “Southern hunter”
Classification: Family: Neovenatoridae – Clade: Megaraptora
Time: Cretaceous (Aptian)
Locality: Australia, Queensland, Winton Formation
Size: 6 meters long
Diet: Carnivore
 
Genus: Minmi ‬After Minmi crossing,‭ ‬Australia‭)”
Classification: Clade: Ankylosauria
Time: Cretaceous (Aptian)
Locality: Australia, Minmi crossing
Size: 2 meters long
Diet: Herbivore
Genus: Leaellynasaura “Leaellyn’s lizard
Classification: Family: Hypsilophodontidae
Time: Cretaceous (Aptian to Albian)
Locality: Australia, Victoria
Size: 2 meters long
Diet: Herbivore
Genus: Serendipaceratops “serendipitous horned face
Classification: Suborder: Ceratopsia
Time: Cretaceous (Aptian)
Locality: Australia – Wonthaggi Formation
Size: 2.3 meters long
Diet: Herbivore
Name: Anhanguera “Old devil”
Classification: Suborder: Pterodactyloidea – Family: Anhanguera
Time: Cretaceous (Aptian)
Locality: Brazil – Santana Formation, Australia, Russia, United Kingdom – Cambridge Greensand
Size: 4.5 m wingspan
Diet: Piscivore
Name: Kronosaurus ‭ “Kronus lizard‭ ‬-‭ ‬after the king of the Greek Titans‭‭”
Classification: Superorder: Order: ‬Plesiosauria – Family: Pliosauridae
Size: 9‭ ‬to ‬10‭ ‬meters long.‭ ‬Skull‭ ‬2.7‭ ‬meters long
Known locations: Australia and‭ ‬Colombia
Time period: Early Cretaceous (Aptian to Albian)
Diet: Carnivore
Genus: Scapanorhynchus Spade snout“‬.
Classification: Order: Lamniformes -‭ ‬Family: Mitsukurinidae.
Locations: Worldwide.
Time period: Cretaceous (Aptian to Maastrichtian ) to Paleogene.
Size: Up to‭ ‬3‭ ‬meters long.
Diet: Carnivore/Piscivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Australiceras
Common Name: Australia Hornstone
Classification: Order: Ammonitida – Suborder: Ancyloceratina
Locatlity: Australia
Time:
Early Cretaceous (Aptian)

Barremian Age/Stage

Early Cretaceous: 129.4 to 121.4 million years ago

The Berrmian Epoch was named in 1873 by Henri Coquand after the village of Berreme, Alpes-de-Haute-Provence in France.

North American Barremian Stage Early Cretaceous: 129.4 to 121.4 million years ago

Genus: Utahraptor “Utah’s hunter”
Classification: Family: Dromaeosauridae – Clade: Eudromaeosauria
Time: Cretaceous (Barremian)
Locality: USA, Utah
Size: 7 meters long
Diet: Carnivore
 
Genus: Gastonia “Gaston’s thing”
Classification: Family: Nodosauridae – Subfamily: Polacanthinae
Time: Cretaceous (Barremian to Albian)
Locality: USA: Utah – Cedar Mountian Formation
Size: 5 meters long
Diet: Herbivore
Genus: Falcarius “sickle  cutter”
Classification: Superfamily: Therizinosauroidea
Time: Cretaceous (Barremian)
Locality: USA, Utah, Cedar Mountain Formation
Size: 3.7 -4 meters long
Diet: Herbivore
 
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous

European Barremian Stage Early Cretaceous: 129.4 to 121.4 million years ago

Genus: Neovenator “New hunter”
Classification: Family: Neovenatoridae
Time: Cretaceous (Barremian)
Locality: United Kingdom, Isle of Wright
Size: 7.5 meters long
Diet: Carnivore
 
Genus: Baryonyx “Heavy claw”
Classification: Subfamily: Baryonychinae
Time: Early Cretaceous (Hauterivian to Barremian)
Locality: England, Surrey. Spain. Porugal. Possibly North Africa.
Size: 9 meters long
Diet: Carnivore
 
Genus: Eotyrannus “Dawn Tyrant”
Classification: Superfamily: Tyrannosauroidea
Time: Cretaceous (Barremian)
Locality: United Kingdom, Isle of Wight – Wessex Formation
Size: 4 meters long
Diet: Carnivore
 
Genus: Polacanthus “many spikes”
Classification: Family: Nodosauridae – Subfamily: Polacanthinae
Time: Cretaceous (Barremian)
Locality: United Kingdom, Isle of Wight, Sussex
Size: 4 meters long
Diet: Herbivore
Genus: Hypsilophodon “Hypsilophus tooth
Classification: Family: Hypsilophodontidae
Time: Cretaceous (Barremian)
Locality: England, Isle of Wight – Wessex Formation
Size: 1.5 to 1.8 meters long
Diet: Herbivore
Genus: Iguanodon “Iguana tooth
Classification: Clade: Iguanodontia – Family: Iguanodontidae
Time: Cretaceous (Barremian to Aptian and Cenomanian?)
Locality: Initially associated with Western Europe,‭ ‬attributed remains are now known in Africa,‭ ‬Asia and North America
Size: 10 meters long
Diet: Herbivore
Genus: Mantellisaurus “Mantell’s lizard
Classification: Clade: Hadrosauriformes
Time: Cretaceous (Barremian to Aptian)
Locality: England, Isle of Wight – Wessex Formation
Size: 7 meters long
Diet: Herbivore
Genus: Concavenator “Hump backed hunter from Cuenca”
Classification: Family: Carcharodontosauridae
Time: Cretaceous (Barremian)
Locality: Spain, Las Hoyas – La Huerguina Formation
Size: 5.8 to 6 meters long
Diet: Carnivore
 
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous

Asian Barremian Stage Early Cretaceous: 129.4 to 121.4 million years ago

Genus: Dilong “Emperor dragon”
Classification: Superfamily: Tyrannosauroidea
Time: Cretaceous (Barremian)
Locality: China, Liaoning Province, Yixian Formation
Size: 2 meters long
Diet: Carnivore
 
Genus: Sinosauropteryx “Chinese lizard wing”
Classification: Family: Compsognathidae
Time: Cretaceous (Barremian to Aptian)
Locality: China, Liaoning Province – Yixian Formation
Size: 107 centimeters long
Diet: Carnivore
 
Genus: Psittacosaurus “parrot lizard
Classification: Suborder: Ceratopsia – Family: Psittacosauridae
Time: Cretaceous (Barremian to Aptian)
Locality: China, Mongolia, and Russia. Possibly also Thailand
Size: 2 meters long
Diet: Herbivore
Genus: Wuerhosaurus “Wuerho lizaed”
Classification: Family: Stegosauridae – Subfamily: Stegosaurinae
Time: Cretaceous (Valanginian to Albian)
Locality: China,: ‬Xinjiang‭ ‬-‭ ‬Tugulu Group,‭ ‬Inner Mongolia‭ ‬-‭ ‬Ejinhoro Formation
Size: 5 to 7 meters long
Diet: Herbivore
Genus: Nanshiungosaurus “Nanshiung lizard”
Classification: Superfamily: Therizinosauroidea
Time: Cretaceous (Barremian to Campanian)
Locality:  China‭ ‬-‭ ‬Chijinbao Formation,‭ ‬Nanxiong Formation,‭ ‬Yuanpu Formation.
Size: 5 meters long
Diet: Herbivore
Genus: Daxiatitan “Daxia titan”
Classification: Superfamily: Titanosauroidea
Time: Early Cretaceous (Barremian)
Locality: China, Gansu Province
Size: 21 meters long
Diet: Herbivore
 
Genus: Siamosaurus 
Classification: Subfamily: Spinosauridae
Time: Early Cretaceous (Barremian to Aptian)
Locality: Thailand
Size: Unknown meters long – known for teeth
Diet: Piscivore/Carnivore
Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Fukuiraptor “Fukui thief”
Classification: Family: Neovenatoridae
Time: Cretaceous (Barremian)
Locality: Japan, Honshu Island, Fukui Prefecture – Kitadani Formation
Size: 4.2 meters long
Diet: Carnivore
 

African Barremian Stage Early Cretaceous: 129.4 to 121.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Genus: Afroventor “African hunter”
Classification: Family Megalosauridae
Time: Cretaceous (Hauterivian to Barremian)
Locality: Africa, Niger, Abaka – Tiouraren Formation
Size: 7 to 8 meters long
Diet: Carnivore
 

South American Barremian Stage Early Cretaceous: 129.4 to 121.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Genus: Amargosaurus “Amarga lizard
Classification: Family: Dicraeosauridae
Time: Cretaceous (Barremian to Aptian)
Locality: Argentina, Neuquen province – La Amarga Formation
Size: 10 meters long
Diet: Herbivore
 

Hauterivian Age/Stage

Early Cretaceous: 132.6 to 129.4 million years ago

The Hauterivian Epoch was named by Swiss geologist Eugene Renevier in 1873 after the lake (Neuchatel) side Swiss town of Hauterive.

European Hauterivian Stage Early Cretaceous: 132.6 to 129.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Baryonyx “Heavy claw”
Classification: Subfamily: Baryonychinae
Time: Early Cretaceous (Hauterivian to Barremian)
Locality: England, Surrey. Spain. Porugal. Possibly North Africa.
Size: 9 meters long
Diet: Carnivore
 

African Hauterivian Stage Early Cretaceous: 132.6 to 129.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore
Genus: Afroventor “African hunter”
Classification: Family Megalosauridae
Time: Cretaceous (Hauterivian to Barremian)
Locality: Africa, Niger, Abaka – Tiouraren Formation
Size: 7 to 8 meters long
Diet: Carnivore
 

South American Hauterivian Stage Early Cretaceous: 132.6 to 129.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Sarcosuchus‭  flesh crocodile
Classification: Order: Crocodylia, Family: Pholidosauridae
Time: Early Cretaceous (Hauterivian to Albian)
Locality:  Africa and South America
Size: 9 to 11 meters long
Diet: Carnivore

Asia Hauterivian Stage Early Cretaceous: 132.6 to 129.4 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Wuerhosaurus “Wuerho lizaed”
Classification: Family: Stegosauridae – Subfamily: Stegosaurinae
Time: Cretaceous (Valanginian to Albian)
Locality: China,: ‬Xinjiang‭ ‬-‭ ‬Tugulu Group,‭ ‬Inner Mongolia‭ ‬-‭ ‬Ejinhoro Formation
Size: 5 to 7 meters long
Diet: Herbivore

Valanginian Age/Stage

Early Cretaceous: 139.8 to 132.2 million years ago

The Valanginian Epoch was first named in 1853 by Edouard Desor after the Valangin, a small town north of Neuchatel in the Jura Mountains of Switzerland. THe oldest angiospermae (flowering plants) cant be dated back to the late Valanginian.

European Valanginian Stage Early Cretaceous: 139.8 to 132.2 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Becklespinax “Beckle’s spine”
Classification: Infraorder: Carnosauria
Time: Early Cretaceous
Locality: England – Sussex
Size: 8 meters long
Diet: Carnivore
Genus: Hylaeosaurus “forest lizard”
Classification: Family: Nodosauridae – Subfamily: Polacanthinae
Time: Early Cretaceous (Valanginian)
Locality: England
Size: 3 to 7.6 meters long
Diet: Herbivore

South American Valanginian Stage Early Cretaceous: 139.8 to 132.2 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Bajadasaurus Bajada lizard
Classification: Family: Dicraeosauridae
Time: Cretaceous (Berriasian to Valanginian)
Locality: Argentina – Bajada Colorada Formation
Size: Uncertain meters long
Diet: Herbivore
 

Asia Valanginian Stage Early Cretaceous: 139.8 to 132.2 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Wuerhosaurus “Wuerho lizaed”
Classification: Family: Stegosauridae – Subfamily: Stegosaurinae
Time: Cretaceous (Valanginian to Albian)
Locality: China,: ‬Xinjiang‭ ‬-‭ ‬Tugulu Group,‭ ‬Inner Mongolia‭ ‬-‭ ‬Ejinhoro Formation
Size: 5 to 7 meters long
Diet: Herbivore

Berriasian Age/Stage

Early Cretaceous: 145.0 to 139.8 million years ago

The Berriasian Epoch was the first stage of the Cretaceous Period and marks the end of the Jurassic. It was named in 1869 by Henri Coquand after the village of Berrias in the Ardeche department in France.

European Berriasian Stage Early Cretaceous: 145.0 to 139.8 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Hybodus Humped tooth“‬.
Classification: Order: Hybodontiformes -‭ ‬Family: Hybodontidae.
Locations: Worldwide.
Time period: Permian (Changhsingian) to Cretaceous (Berriasian).
Size: Up to‭ ‬2‭ ‬meters long.
Diet: Carnivore
Genus: Dakosaurus “tearing lizard/biter lizard”
Classification: Suborder: Thalattosuchia, Family: Metriorhynchidae
Time: Jurassic (Oxfordian) to Early Cretaceous (Berriasian)
Locality: Europe,‭ ‬North America,‭ ‬South America,‭ ‬Russia
Size: 4 to 5 meters long
Diet: Carnivore
Genus: Becklespinax “Beckle’s spine”
Classification: Infraorder: Carnosauria
Time: Early Cretaceous
Locality: England – Sussex
Size: 8 meters long
Diet: Carnivore

South American Berriasian Stage Early Cretaceous: 145.0 to 139.8 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Hybodus Humped tooth“‬.
Classification: Order: Hybodontiformes -‭ ‬Family: Hybodontidae.
Locations: Worldwide.
Time period: Permian (Changhsingian) to Cretaceous (Berriasian).
Size: Up to‭ ‬2‭ ‬meters long.
Diet: Carnivore
Genus: Dakosaurus “tearing lizard/biter lizard”
Classification: Suborder: Thalattosuchia, Family: Metriorhynchidae
Time: Jurassic (Oxfordian) to Early Cretaceous (Berriasian)
Locality: Europe,‭ ‬North America,‭ ‬South America,‭ ‬Russia
Size: 4 to 5 meters long
Diet: Carnivore
Genus: Bajadasaurus Bajada lizard
Classification: Family: Dicraeosauridae
Time: Cretaceous (Berriasian to Valanginian)
Locality: Argentina – Bajada Colorada Formation
Size: Uncertain meters long
Diet: Herbivore
 

North American Berriasian Stage Early Cretaceous: 145.0 to 139.8 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Hybodus Humped tooth“‬.
Classification: Order: Hybodontiformes -‭ ‬Family: Hybodontidae.
Locations: Worldwide.
Time period: Permian (Changhsingian) to Cretaceous (Berriasian).
Size: Up to‭ ‬2‭ ‬meters long.
Diet: Carnivore
Genus: Dakosaurus “tearing lizard/biter lizard”
Classification: Suborder: Thalattosuchia, Family: Metriorhynchidae
Time: Jurassic (Oxfordian) to Early Cretaceous (Berriasian)
Locality: Europe,‭ ‬North America,‭ ‬South America,‭ ‬Russia
Size: 4 to 5 meters long
Diet: Carnivore

Asian Berriasian Stage Early Cretaceous: 145.0 to 139.8 million years ago

Genus: Belemnitina
Common name:“Belemnites”
Classification: Superoder: Belemnoidea – Order: Belemnitida
Locality: Worldwide
Time: Late Triassic to End Cretaceous
Common name: Ammonite
Classification: Suborder: Ammonitida – Suborder: Ammonoidae
Locality:
Worldwide
Time range: Devonian to End Cretaceous
Genus: Hybodus Humped tooth“‬.
Classification: Order: Hybodontiformes -‭ ‬Family: Hybodontidae.
Locations: Worldwide.
Time period: Permian (Changhsingian) to Cretaceous (Berriasian).
Size: Up to‭ ‬2‭ ‬meters long.
Diet: Carnivore
Genus: Dakosaurus “tearing lizard/biter lizard”
Classification: Suborder: Thalattosuchia, Family: Metriorhynchidae
Time: Jurassic (Oxfordian) to Early Cretaceous (Berriasian)
Locality: Europe,‭ ‬North America,‭ ‬South America,‭ ‬Russia
Size: 4 to 5 meters long
Diet: Carnivore

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