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Hannaoceras
Taxonomy
Hannaoceras was named by Tomlin (1931) [Sepkoski's age data: Tr Carn-l Sepkoski's reference number: 302]. Its type is Ammonites nasturtium.
It was assigned to Choristoceratidae by Spath (1951); to Trachyceratidae by Tozer (1981); and to Ceratitida by Sepkoski (2002).
It was assigned to Choristoceratidae by Spath (1951); to Trachyceratidae by Tozer (1981); and to Ceratitida by Sepkoski (2002).
Species
Synonyms
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Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Hannaoceras Tomlin 1931
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†Hannaoceras nasturtium Dittmar 1866
Invalid names: Polycyclus Mojsisovics 1889 [replaced], Polysphinctoceras Spath 1934 [objective synonym], Smithoceras Hanna 1924 [replaced]
Diagnosis
No diagnoses are available