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Hyperodapedon
Fossil range: Late Triassic
Hyperodapedon BW2
Scientific classification

Kingdom:

Animalia

Phylum:

Chordata

Class:

Sauropsida

Subclass:

Diapsida

Infraclass:

Archosauromorpha

Order:

Rhynchosauria

Family:

Rhynchosauridae

Subfamily:

Hyperdapedontinae

Genus:

Hyperodapedon
Huxley, 1859

Species:

  • H. huenei
  • H. mariensis
  • H. huxleyi
  • H. gordoni
  • H. fischeri
  • H. sanjuanensis

Hyperodapedon is a genus of rhynchosaur (a beaked, archosaur-like reptile) from the Triassic period. Scaphonyx, once thought to be a dinosaur, is now known to be based on material from a specimen of Hyperodapedon, making the name Scaphonyx an invalid junior synonym.

Hyperodapedon is known from several species and has been found in many areas of the world, due to the continents being joined together in the supercontinent Pangaea during the Triassic. Fossils from the various species have been identified from South America, Russia, Europe, and India. It was hunted by many predators like Saurosuchus and Prestosuchus.

DiscoveryEdit

The type species of Scaphonyx (meaning canoe claw), Scaphonyx fischeri that once thought to be a dinosaur, is now known to be based on dubious material and therefore should be a nomen dubium. The name Paradapedon was erected for the Indian species H. huxleyi (Lydekker, 1881). Benton, 1983, concluded that this rhynchosaur should be considered a species of Hyperodapedon.

DescriptionEdit

Hyperodapedon was a heavily built, stocky, animal around 1.3 meters (4.3 ft) in length. Apart from its beak, it had several tows of heavy teeth on each side of the upper jaw, and a single row on each side of the lower jaw, creating a powerful chopping action when it ate. It is believed to have been herbivorous, feeding mainly on seed ferns, and died out when these plants became extinct at the end of the Triassic.[1]

ClassificationEdit

ReferencesEdit

  1. ^ Palmer, D., ed (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 92. ISBN 1-84028-152-9. 


Champsosaurus BW

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