Rank Genus Subclass Ammonites | Order Goniatite | |
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Similar Ammonites, Goniatite, Cheiloceras, Manticoceras, Agoniatites | ||
Tornoceras is a strongly involute, subdiscoidal Middle and Upper Devonian goniatite with a suture that forms six to ten lobes.
Aulatornoceras, Protornoceras, Epitornoceras, Lobotornoceras are among related genera included in the Tornoceratidae. Inclusion however varies from classification to classification.
References
Tornoceras Wikipedia(Text) CC BY-SA