English dictionary
protoconch
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
The embryonic shell, or first chamber, of ammonites and other cephalopods.
Source: webster1913
English dictionary
Definitions, examples, synonyms and antonyms from WordNet 3.0.
The embryonic shell, or first chamber, of ammonites and other cephalopods.
Source: webster1913