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Robsonoceras

Cephalopoda - Ellesmerocerida - Ellesmeroceratidae

Taxonomy
Robsonoceras was named by Ulrich and Foerste (1933) [Sepkoski's age data: O Trem-u O Aren Sepkoski's reference number: 298,524]. Its type is Ellesmeroceras robsonensis.

It was assigned to Robsonoceratidae by Ulrich and Foerste (1933); to Ellesmeroceratidae by Flower (1964) and Crick (1981); and to Ellesmerocerida by Sepkoski (2002).

Synonymy list
YearName and author
1933Robsonoceras Ulrich and Foerste p. 288
1964Robsonoceras Flower p. 60
1981Robsonoceras Crick p. 227
2002Robsonoceras Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classCephalopodaCuvier 1797
orderEllesmerocerida()
familyEllesmeroceratidaeKobayashi 1934
genusRobsonocerasUlrich and Foerste 1933

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.

G. †Robsonoceras Ulrich and Foerste 1933
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†Robsonoceras manitouense Ulrich et al. 1944
†Robsonoceras robsonense Walcott 1924
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Grouping: solitaryo
Environment: marineo
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivorec
Vision: well-developedc
Created: 2005-10-06 14:32:52
Modified: 2007-09-07 11:44:36
Source: o = order, c = class
References: Kiessling 2004, Aberhan et al. 2004

Age range: base of the Stairsian to the top of the Early/Lower Llanvirn or 485.40000 to 461.10000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Skullrockian487.5 - 482.3Canada (Alberta) Ellesmeroceras robsonensis (157027)
Tremadoc486.5 - 477.7Argentina R. sp. (9010)
Stairsian485.4 - 478.6Canada (British Columbia) Ellesmeroceras robsonensis (88872)
Gasconadian485.4 - 477.7Canada (Alberta) Ellesmeroceras robsonensis (157026)
Tremadocian485.4 - 477.7USA (Virginia) R. sp. (78881)
Arenig - Early/Lower Llanvirn478.6 - 461.1Argentina R. sp. (8720)
Blackhillsian474.9 - 470.0USA (Colorado) R. manitouense (102276)
Llanvirn468.0 - 458.4South Korea (Kangwon-do) R. meridionale (56171)