Belemnite

[belәmnait]

解釋/意思:

(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.

編輯:波西亚--From WordNet

解釋/意思:

(n.) 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.

布莱尔整理

解釋/意思:

n. a fossil pointed like a dart being the internal shell of a genus of cephalopods formerly known as Thunder-bolt Thunder-stone Elf-bolt.

編輯:凯利