Prehistoric Models: Mosasaurs

Mosasaurs are marine reptiles closely related to snakes and lizards that lived exclusively in th the late or upper Cretaceous between 100 and 66 million years ago. The earliest members of this group can be found in my home state of Texas and are highlighted at the Perot Museum on Dallas, Texas. Mosasaur teeth are a commonly sold “giftshop” fossil. To see my Mosasaur fossils click here.

Kingdom: Animalia – Phylum: Chordata – Superclass: Tetrapoda – Class: Reptilia – Order: Squamata – Clade: Pythonomorpha – Superfamily: Mosasauroidea – Family: Mosasauridae

(snake-like marine reptiles mosasaurs)

Late Cretaceous

 

Genus: Mosasaurus (‭”Meuse lizard‭ ‬-‭ ‬after the Meuse River‭”)

Genus pronounced: Moe-za-sore-us.

Named By: William Daniel Conybeare‭ ‬-‭ ‬1822‭ (‬Gideon Mantell added the species name in‭ ‬-‭ ‬1829‭)‬

Classification: Tribe: ‬Mosasaurini.

Species: M.‭ ‬hoffmannii‭ (‬type‭)‬,‭ ‬M.‭ ‬beaugei,‭ ‬M.‭ ‬conodon,‭ ‬M.‭ ‬lemonnieri,‭ ‬M.‭ ‬missouriensis

Known locations: Western Europe and North America

Time period: Cretaceous (Maastrichtian)

Size: 15 meters long

Diet: Carnivore

Genus: Tylosaurus ‭(‬Knob lizard‭)‬

Genus pronounced: Tie-lo-sore-us

Named By: Othniel Charles Marsh‭ ‬-‭ ‬1872.

Classification: Subfamily: ‬Tylosaurinae

Species: T.‭ ‬prioriger‭ (‬type‭)‬,‭ T. bernardi, T. gaudryi, T. iembeensis, T. ivoensis, T. nepaeolicus, T. pembinensis, T. saskatchewanensis

Known locations: Canada.‭ ‬Central states of USA

Time period: Cretaceous (Maastrichtian)

Size: 15‭ ‬meters long

Diet: Carnivore

Genus: Tylosaurus ‭(‬Knob lizard‭)‬

Genus pronounced: Tie-lo-sore-us

Named By: Othniel Charles Marsh‭ ‬-‭ ‬1872.

Classification: Subfamily: ‬Tylosaurinae

Species: T.‭ ‬prioriger‭ (‬type‭)‬,‭ T. bernardi, T. gaudryi, T. iembeensis, T. ivoensis, T. nepaeolicus, T. pembinensis, T. saskatchewanensis

Known locations: Canada.‭ ‬Central states of USA

Time period: Cretaceous (Maastrichtian)

Size: 15‭ ‬meters long

Diet: Carnivore

The video below is from my YouTube Jurassic James 65:

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