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(hyp-so-nay-fuss (the 'g' is silent))
meaning: "High jaw"
Named By: Charles W. Gilmore in 1928
Time Period: Late Triassic
Location: USA, Conneticut - New Haven Formation and New Jersey - Passaic Formation, and Canada, Nova Scotia - Blomidon Formation & Wolfville Formation
Size: 33 centimetres long
Diet: Herbivore
Fossil(s): Several individuals
Classification: | Chordata | Reptilia | Procolophonomorpha | Procolophonidae | Leptopleuroninae |

Hypsognathus ('high jaw') is an extinct genus of procolophonid parareptile from the Late Triassic of New Jersey and Connecticut.

Hypsognathus resembled a moderately sized lizard, with a length of 33 centimetres (13 in), although it was unrelated to modern lizards. Because of its broad teeth, Hypsognathus is thought to have been a herbivore. Its body is low and broad and it has a relatively short tail. Hypsognathus has some spikes on the side of its head, probably for protection against predators.

Read more about Hypsognathus at Wikipedia
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