belemnite

名词 belemnite:

1. 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

bel.em.nite

n.（名词）
A cone-shaped, fossilized internal shell of any of an extinct genus of cephalopods related to the cuttlefish.
箭石：由灭绝的与乌贼有血亲关系的头足纲动物的内壳形成的尖锥状化石

来源：
New Latin belemnotôs
现代拉丁语 belemnotôs
from Greek belemnon [dart] * see g wel…-
源自 希腊语 belemnon [标枪，短矛，投标枪] *参见 g wel…-