xiphosurus

/zaɪˌfɒsəˈrʌs/

Definitions

1. noun

A genus of fossilized, extinct sea cows, specifically the genus of the genus Xiphactinus.

“The xiphosurus, a prehistoric marine mammal, roamed the Earth millions of years ago.”

Synonyms

  • manatee
  • sea cow

Antonyms

  • land animal
  • terrestrial mammal