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Ptychitidae

Family of molluscs (fossil) From Wikipedia, the free encyclopedia

Ptychitidae
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The Ptychitidae is a family of ceratitid ammonites (ammonites sensu lato). They are combined with the Eosagenitidae and Sturiidae in the superfamily Ptychitoidea.

Quick Facts Scientific classification ...

Ptychitid genera have compressed, involute shells in which the inner whorls are covered by the outermost, that may be ribbed or smooth, and ammonitic sutures with secondary elements.

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Genera

References

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