belemnite /ˈbɛləmˌnaɪt/noun 1forms 1phrases 1 noun1 •Any member of the extinct order †Belemnitida of Mesozoic marine cephalopods, very similar in many ways to the modern squid and closely related to the modern cuttlefish.The guts of fossilized marine reptiles are packed with belemnites, and it's been theorized that some prehistoric sharks even died from the overconsumption of heavy belemnite shell guards. — 2017 formsbelemnites Phrases with belemnite belemnite battlefieldA fossil site with an unusually high concentration of belemnite rostra.
