ammonoid

ammonoid

美 [æ'mɒnɔɪd] 　英 [æ'mɒnɔɪd]

• 网络菊石；菊石动物；无脊椎动物菊石动物

词形变化

复数：ammonoids  

英汉解释

n.	1. an extinct cephalopod mollusk with a partitioned shell

例句

After each extinction, a rich variety of ammonoid species and body plans was replaced by a few free-floating types.

在每次物种灭绝之中，大量的菊石和体平面为少量浮游动物所替代。