Astreptoceras definitions

Astreptoceras

1) Cretaceous ammonite
Found on https://www.crosswordclues.com/clue/astreptoceras

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Astreptoceras

Astreptoceras is an extinct upper Cretaceous ammonoid cephalopod named by Hendeson in 1970. ...
Found on http://en.wikipedia.org/wiki/Astreptoceras

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