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

Cadoceras comma

Cephalopoda - Ammonitida - Cardioceratidae

Taxonomy
Cadoceras comma was named by Imlay (1953). Its type specimen is USNM 108057, a shell, and it is a 3D body fossil. Its type locality is USGS Mesozoic 21348, Iniskin Peninsula, which is in a Callovian marine siltstone in the Chinitna Formation of Alaska.

Sister species lacking formal opinion data
C. frearsi, C. simulans

Synonymy list
YearName and author
1953Cadoceras comma Imlay p. 83 figs. Pl 35, figs 1-8; pl 36, figs 1-5
1993Cadoceras comma Arthur et al. p. 38 figs. Pl 3, figs 9,10; pl 4, fig 1; pl 5, figs 1-4

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyStephanoceratoidea(Newmayr 1875)
familyCardioceratidaeSiemiradzki 1891
subfamilyCadoceratinaeHyatt 1900
genusCadoceras
speciescomma

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.

†Cadoceras comma Imlay 1953
show all | hide all
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height820.28.3058.023.016.0
shell diameter849.223.5130.053.035.9
shell inflation814.86.0039.015.511.9

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 2003, Kiessling 2004

Age range: base of the Early/Lower Callovian to the top of the Callovian or 164.70000 to 163.50000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Callovian166.1 - 163.5USA (Alaska) Cadoceras comma (158661 158662 158666 158667 type locality: 158682 158691 158698 158882 158886 158889 158893 158894 158899 158906 158907 158908 158910 158914 158916 158920 158921 158942 158947)
Early/Lower Callovian164.7 - 161.2Canada (British Columbia) Cadoceras comma (185051 185056 185062)