BELEMNITE
belemnite
(noun) a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae
Source: WordNet® 3.1
Etymology
Noun
belemnite (plural belemnites)
(paleontology) 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.
Synonyms
• belemnoid
• ceraunite
• elf-bolt
• thunderbolt
Source: Wiktionary
Be*lem"nite, n. Etym: [Gr. dart, fr. dart, fr. to throw: cf. F.
bélemnite.] (Paleon.)
Definition: A conical calcareous fossil, tapering to a point at the lower
extremity, with a conical cavity at the other end, where it is
ordinarily broken; but when perfect it contains a small chambered
cone, called the phragmocone, prolonged, on one side, into a delicate
concave blade; the thunderstone. It is the internal shell of a
cephalopod related to the sepia, and belonging to an extinct family.
The belemnites are found in rocks of the Jurassic and Cretaceous
ages.
– Bel*em*nit"ic, a.
Source: Webster’s Unabridged Dictionary 1913 Edition