| 释义 |
belemnite /ˈbɛləmnʌɪt /nounAn extinct cephalopod mollusc with a bullet-shaped internal shell that is typically found as a fossil in marine deposits of the Jurassic and Cretaceous periods.- Order Belemnoidea, class Cephalopoda: many genera.
These turned out to be remains from the tentacles of extinct squid-like belemnites....- They included the great marine reptiles such as ichthyosaurs and plesiosaurs, but also smaller creatures such as ammonites and belemnites - the precursor's of today's squid.
- Urgonian facies are also characterized, negatively, by the absence of ammonites and belemnites.
Origin Early 17th century: from modern Latin belemnites, based on Greek belemnon 'dart'. |