rhynchosaur

From rhyncho- +‎ -saur on the basis of their prominent beak-like structures.

rhynchosaur (plural rhynchosaurs)

1. Any of several diapsid reptiles, of order Rhynchosauria, from the Triassic period

• “rhynchosaur”, in OneLook Dictionary Search.
• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “rhynchosaur”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.