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Hannaoceras

Cephalopoda - Ceratitida - Trachyceratidae

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).

Synonyms
Synonymy list
YearName and author
1889Polycyclus Mojsisovics
1924Smithoceras Hanna
1931Hannaoceras Tomlin p. 174
1951Hannaoceras Spath p. 84
1981Hannaoceras Tozer p. 96
2002Hannaoceras Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassAmmonoidea(Zittel 1884)
orderCeratitidaHyatt 1884
superfamilyTrachyceratoidea(Haug 1894)
familyTrachyceratidaeHaug 1894
genusHannaoceras

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.

Diagnosis
No diagnoses are available