Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Cosmoceras (Gulielmiceras) alaskanum

Cephalopoda - Ammonoida - Kosmoceratidae

Taxonomy
Cosmoceras (Gulielmiceras) alaskanum was named by Imlay (1953). Its type specimen is USNM 108141, a shell, and it is a 3D body fossil. Its type locality is USGS Mesozoic 2920, Iniskin Bay, which is in a Callovian marine siliciclastic in the Chinitna Formation of Alaska.

Sister species lacking formal opinion data
C. ornatum

Synonymy list
YearName and author
1953Cosmoceras (Gulielmiceras) alaskanum Imlay p. 100 figs. Pl 49, figs 13-16

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
subclassColeoideaBather 1888
RankNameAuthor
orderAmmonoida(Haeckel 1866)
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctoidea(Steinman 1890)
familyKosmoceratidaeHaug 1887
genusCosmocerasBuckman 1920
subgenusGulielmiceras
speciesalaskanum

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.

show all | hide all
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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: Callovian or 165.30000 to 161.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Callovian165.3 - 161.5USA (Alaska) Cosmoceras alaskanum (type locality: 158901 158902)