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Didymoceras hornbyense

Cephalopoda - Ammonitida - Nostoceratidae

Taxonomy
Heteroceras hornbyense was named by Whiteaves (1876). It is not a trace fossil.

It was recombined as Nostoceras hornbyense by Usher (1952), Anderson (1958); it was recombined as Didymoceras hornbyense by Reyment (1955), Matsumoto (1960), Jones (1963), Howarth (1965), Zaborski (1985).

Sister species lacking formal opinion data
D. abyssinus, D. cochleatum, D. indicum, D. mortoni, D. tortum, D. indicum

Synonymy list
YearName and author
1876Heteroceras hornbyense Whiteaves
1952Nostoceras hornbyense Usher p. 102
1955Didymoceras hornbyense Reyment p. 13 figs. Pl 1, fig 3; text-fig 2b
1958Nostoceras hornbyense Anderson p. 195
1960Didymoceras hornbyense Matsumoto pp. 157 - 158
1963Didymoceras hornbyense Jones p. 30
1965Didymoceras hornbyense Howarth p. 377
1985Didymoceras hornbyense Zaborski p. 14 figs. 12-14

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAncyloceratinaWiedmann 1966
superfamilyTurrilitoidea(Gill 1871)
familyNostoceratidaeHyatt 1894
genusDidymocerasHyatt 1900
specieshornbyense(Whiteaves 1876)

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.

†Didymoceras hornbyense Whiteaves 1876
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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 2003, Kiessling 2004

Age range: base of the Campanian to the top of the Maastrichtian or 83.60000 to 66.00000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.2USA (Alaska) Didymoceras hornbyense (88818)
Campanian83.6 - 72.2USA (California) Didymoceras californicum (86859)
Late/Upper Campanian83.6 - 72.2USA (California) Didymoceras hornbyense (225372 225837)
Late/Upper Campanian83.6 - 72.2Angola Didymoceras hornbyense (88882)
Late/Upper Campanian83.6 - 72.2USA (Alaska) Didymoceras hornbyense (158222 158227 158386)
Late/Upper Campanian83.6 - 72.2Nigeria Didymoceras hornbyense (69626)
Late/Upper Campanian - Maastrichtian83.6 - 66.0USA (Alaska) Didymoceras hornbyense (88816)
Maastrichtian72.2 - 66.0Nigeria Didymoceras hornbyense (82732)