Pseudosuchian

Part of speech: noun, adjective

Definitions

1. Referring to a group of extinct reptiles related to modern crocodiles, characterized by diverse forms that lived predominantly during the Triassic period; includes species that display both primitive and advanced features within their evolutionary lineage
2. Denoting members of an ancient group of archosaur reptiles that share a common ancestry with current crocodilian species; known for their varied morphology and predominance in the Mesozoic era; often studied to understand crocodile evolution
3. Pertaining to prehistoric reptiles classified within the clade that encompasses crocodilian relatives; these creatures exhibit adaptations linking early archosaurs to modern crocodiles, with fossils mainly found in Triassic terrestrial deposits

Etymology: Pseudosuchian is a compound built from Greek "pseudēs," meaning "false," and "suchus," the Greek name for the Egyptian crocodile god Sobek, so the word literally means "false crocodile." The name was coined by paleontologists to describe a group of reptiles that looked crocodile-like but were not true crocodilians, since they belonged to a wider lineage. The Greek elements are the core of the word, and the specific coinage is a modern scientific one rather than anything the Greeks themselves used. The "false" in the name reflects a real problem of classification. Crocodilians and their close relatives were grouped together by many early researchers, and the term was a way of separating the extinct forms that resembled crocodiles from the living line that eventually gave rise to today's species. Modern studies place crocodilians within this larger group, which is why the same name now covers ancestors that share a common lineage with living crocodiles.

Synonyms: crurotarsan, archosaur