belemnoidea

/ˌbɛlɛmnoɪˈiːdiə/ BEL-əm-noy-EE-dee-ə

Definitions

1. noun

An extinct order of cephalopods with a long, straight or curved internal shell, often fossilized.

“The belemnoidea fossils found in the museum provided valuable insights into the evolution of marine life.”

Synonyms

  • belemnite
  • celerite

Antonyms

  • modern cephalopod