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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).

Species
G. devauxi, G. fouquei, G. transversarium
Species lacking formal opinion data
G. riazi

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

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyAspidoceratoideaZittel 1895
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.

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†Gregoryceras devauxi Bert and Enay 2004
†Gregoryceras fouquei Kilian 1889
†Gregoryceras transversarium Quenstedt 1847
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height116.5----
diameter145.0----
inflation118.0----
shell height920.612.834.719.59.17
shell diameter960.035.0107.054.230.7
shell inflation924.513.448.621.914.7

Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2004, Kiessling 2003

Age range: base of the Early/Lower Oxfordian to the top of the Oxfordian or 161.20000 to 157.30000 Ma

Collections (25 total)


Time interval Ma Country or state Original ID and collection number
Oxfordian163.5 - 157.3Hungary G. fouquei (160403)
Oxfordian163.5 - 157.3Madagascar G. riazi (98176)
Oxfordian163.5 - 157.3Algeria G. fouquei (45048) G. riazi, G. fouquei (45047)
Early/Lower Oxfordian161.2 - 155.7France G. riazi (12285 12286 12287)
Late/Upper Oxfordian161.2 - 155.7Madagascar G. riazi (234235)
Late/Upper Oxfordian161.2 - 155.7Madagascar (Atsimo-Andrefana) G. rogeri (234263)
Middle Oxfordian161.2 - 155.7Germany G. fouquei (62307) G. riazi (62305)
Middle Oxfordian161.2 - 155.7Switzerland G. transversarium (171668)
Middle Oxfordian161.2 - 155.7France (Normandy) G. transversarium (4921)
Middle Oxfordian161.2 - 155.7India (Gujarat) G. sp. (46551)
Middle Oxfordian161.2 - 155.7France G. devauxi (163894) G. riazi (163585 163892) G. riaziformis (163587) G. romani, G. riazi (12288) G. sp. nov. (163891) G. tenuisculptum (163890 163893) G. transversarium (12291)
Middle Oxfordian161.2 - 155.7Italy (Trapani) G. fouquei (36732 36817)