aetosaur

noun aeto·saur \ ā-ˈe-tə-ˌsȯr \

Definition of aetosaur

plural aetosaurs
:any of an order or suborder (Aetosauria) of extinct, chiefly herbivorous, armored reptiles that lived during the late Triassic period and had a long, narrow body, a small head, and a flat, piglike snout
  • … footprints (actually scrape marks) can also be identified as coming from two other large vertebrates: phytosaurs and aetosaurs, crocodile-like reptiles who lived around the shallow lake.
  • —Jeanne Nicholson SilerWashington Post2 Nov. 1990
  • Aetosaurs were low-slung animals 1 to 5 metres long with small heads and armoured bodies, built like the ankylosaurs of the dinosaur age or the extinct, car-sized armadillos that died out around 10,000 years ago.
  • —Jeff HechtNew Scientist25 Feb. 2006
Note: Aetosaurs are archosaurs that are closely related to the crocodilians.

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Origin and Etymology of aetosaur

borrowed from New Latin Aëtosauria, from Aëtosaurusaetosaurus + -ia2-ia


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