Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy   Age range and collections

Gregoryceras

Cephalopoda - Ammonitida - Aspidoceratidae

Taxonomy
Gregoryceras is a genus. It is not extant. Its type is Ammonites transversarius.

It was assigned to Peltoceratinae by Arkell et al. (1957); and to Ammonoidea by Sepkoski (2002).

Synonymy list
YearName and author
1957Gregoryceras Arkell et al. p. 335
2002Gregoryceras Sepkoski, Jr.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea(Zittel 1884)
orderAmmonitidaHyatt 1889
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctoidea(Steinman 1890)
familyAspidoceratidaeZittel 1895
subfamilyPeltoceratinaeSpath 1924
genusGregoryceras

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