ammonoid
ammonoid · ammonoids
An extinct cephalopod of the subclass †AmmonoideaAn extinct cephalopod of the subclass †Ammonoidea (including ammonites).
Meaning
1 sensesAn extinct cephalopod of the subclass †Ammonoidea (including ammonites).
More definitions
- one of the coiled chambered fossil shells of extinct mollusks
Origin
From the scientific name Ammonoidea, equivalent to Ammon + -oid.From the scientific name Ammonoidea, equivalent to Ammon + -oid.
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