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Helicoceras

Cephalopoda - Ammonitida - Nostoceratidae

Taxonomy
Helicoceras was named by d'Orbigny (1840).

It was assigned to Nostoceratidae by Kennedy and Bilotte (1995).

Synonymy list
YearName and author
1840Helicoceras d'Orbigny
1995Helicoceras Kennedy and Bilotte p. 366

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassAmmonoidea()
orderAmmonitida
suborderAncyloceratinaWiedmann 1966
superfamilyTurrilitoidea(Gill 1871)
familyNostoceratidaeHyatt 1894
genusHelicocerasd'Orbigny 1840

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. †Helicoceras d'Orbigny 1840
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†Helicoceras annulatum d'Orbigny 1840
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: base of the Late/Upper Albian to the top of the Early/Lower Maastrichtian or 105.30000 to 66.00000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Albian105.3 - 99.6Angola H. annulatum (210730)
Late/Upper Albian105.3 - 99.6Brazil (Sergipe) H. hystriculum (87857)
Coniacian89.8 - 86.3USA (Texas) H. sp. (88539)
Late/Upper Campanian83.5 - 70.6USA (Texas) H. navarroense (7481 7552 7565)
Late/Upper Campanian83.5 - 70.6USA (Tennessee) H. navarroense (88357)
Maastrichtian72.1 - 66.0USA (Texas) H. navarroense (7570 7582) H. sp. (7531)
Early/Lower Maastrichtian70.6 - 66.0USA (Texas) H. navarroense (7560)
Late/Upper Maastrichtian70.6 - 66.0USA (Mississippi) H. sp. (4148)
Late/Upper Maastrichtian70.6 - 66.0USA (Alabama) H. sp. (4180 4202)