Biology:Hannaoceras

Short description: Genus of molluscs (fossil)

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Hannaoceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida.

The family to which Hannaoceras belongs, the Trachyceratidae, has more or less involute, highly ornamented shells and ceratitic to ammonitic sutures. Age range: 232.0 to 221.5 Ma.

References

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Bibliography

• Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press. 

Wikidata ☰ Q23840638 entry