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Semiformiceras

Cephalopoda - Ammonitida - Oppeliidae

Taxonomy
Semiformiceras is a genus. It is not extant.

It was assigned to Streblitinae by Arkell et al. (1957); to Oppeliidae by Zeiss et al. (1994); and to Ammonoidea by Sepkoski (2002).

Species
Species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1957Semiformiceras Arkell et al. p. 284
1994Semiformiceras Zeiss et al. p. 370
2002Semiformiceras Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassAmmonoidea(Zittel 1884)
orderAmmonitidaHyatt 1889
suborderAmmonitinaHyatt 1889
superfamilyHaploceratoidea(Zittel 1884)
familyOppeliidaeBonarelli 1894
genusSemiformiceras

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