FOSSILS SPECIMEN: CEPHALOPODA

Fossils are defined as any evidence of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung). One of the most collected fossil s are ammonites!

Cephalopoda means “head foot” due to their general appearance. This group includes the famous ammonites, nautiloids and the simple shelled belemnites. To see my modern cephalopod specimen click here, or to see my model cephalopods click here.

Kingdom: Animalia – Phylum: Mollusca – Class: Cephalopoda – Order: Belemnitida

(belemnite)

Triassic to Cretaceous

Belemnitella americana in matrix

Cretaceous

Mt. Laurel Formation D & D Canal Delaware

Belemnoidae Pachyteuthis

Lower Jurassic to Lower Cretaceous

Unja River, Kostroma Region Russia

Belemnitella americana

Cretaceous

Mt. Laurel Formation D & D Canal Delaware

Pachyteuthis densus 

Jurassic

South Dakota, United States

Kingdom: Animalia – Phylum: Mollusca – Class: Cephalopoda – Subclass: Nautiloidea

(nautiloids and the chamber nautilus)

Lower Cambrian to Holocene

Polished Orthoceras sp. “straight horn”

“Nautiloid Spear”

Upper Devonian (370 MYA)

Anti-Atlas Mountains, Morocco, North Africa

 

Polished Orthoceras sp. “straight horn”

“Nautiloid Spear”

Upper Devonian (370 MYA)

Anti-Atlas Mountains, Morocco, North Africa

 

Polished Orthoceras sp. “straight horn”

“Nautiloid Spear”

Upper Devonian (370 MYA)

Anti-Atlas Mountains, Morocco, North Africa

 

 Nautiloids

Paleozoic

Global

Nautiliod Mooreoceras

Pennsylvanian

(Upper Carboniferous)

west Mineral Wells roadcut Palo Pinto County, Texas

Nautiloid Brachycycloceras

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Nautiloid Euloxoceras

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Nautiloid Pseudorthoceras

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Nautiloid Shimanskya postremus

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Kingdom: Animalia – Phylum: Mollusca – Class: Cephalopoda – Subclass: Ammonoidea

(ammonites)

Devonian to Cretaceous

Ammonite Cleoniceras sp.

Early Cretaceous – Albian Stage (110 MYA)

Ambatolafia, Mahajanga Province, Madagascar

Ammonite (reycrystalized)

Goniatite Ammonite (reycrystalized)

Ammonite Cleoniceras sp.

Early Cretaceous – Albian Stage (110 MYA)

Ambatolafia, Mahajanga Province, Madagascar

Ammonite Cleoniceras sp.

Early Cretaceous – Albian Stage (110 MYA)

Ambatolafia, Mahajanga Province, Madagascar

Paired Ammonite Cross Sections

Pyritized Ammonite

Mesozoic

Polished Ammonite

Ammonites with Ammolite

Ammonite Oxytropidoceras 

(internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Ammonite Oxytropidoceras 

(internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Ammonite Oxytropidoceras 

(internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Perisphinctes

Late Jurassic 

near Sakaraha, Tulear, Madagascar

Ammonite

Ammonite with Internal Suture Pattern

Cretaceous

North America

Ammonite Imprint

Cretaceous

Morrocco

Ammonite

Upper Cretaceous

Ladonia Fossil Park, Ozan Formation

Ladonia, Texas

Ammonite Coprolite

Jurassic

Germany

Ammonite Gonioloboceras

Pennsylvanian

(Upper Carboniferous)

west Mineral Wells roadcut

Palo Pinto County, Texas

Goniatite Gonioloboceras

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formatio, Jacksboro

Jack County, Texas

Ammonite Metacoceras

Pennsylvanian

(Upper Carboniferous)

Mineral Wells Fossil Park

Palo Pinto County, Texas

Kingdom: Animalia – Phylum: Mollusca – Class: Cephalopoda – Subclass: Ammonoidea

(baculites means “walking stick rock”)

Upper Cretaceous

Baculites (red zone)

Upper Cretaceous

Ladonia Fossil Park, Ladonia, Texas

Baculites

Cretaceous

Baculites

Upper Cretaceous

Ladonia Fossil Park, Ladonia, Texas

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