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Hildoceras apertum

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy
Hildoceras apertum was named by Gabilly (1976). It is not extant.

It was synonymized subjectively with Hildoceras bifrons by Howarth (1992).

Sister species lacking formal opinion data
H. acarnanicum, H. levisoni

Synonymy list
YearName and author
1976Hildoceras apertum Gabilly
2006Hildoceras apertum Bécaud p. 90 figs. Pl 28, fig 3; pl 46, figs 1,3,4
2010Hildoceras apertum Galácz et al. p. 327 figs. Pl 5, figs 1,2

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyHildoceratoidea(Hyatt 1867)
familyHildoceratidaeHyatt 1867
subfamilyHildoceratinaeHyatt 1867
genusHildoceras
speciesapertumGabilly 1976

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.

†Hildoceras apertum Gabilly 1976
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
diameter189.4----
inflation141.1----
shell height418.210.034.518.811.2
shell diameter458.630.0120.060.240.7
shell inflation426.511.060.029.522.2

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 Early/Lower Toarcian to the top of the Late/Upper Toarcian or 183.00000 to 175.60000 Ma

Collections (53 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0Spain (Granda) Hildoceras apertum (201083 201084 201085 201086 201087 201088 201089 201090 201091 201093 201096)
Bifrons182.0 - 175.6France (Deux-Sevrès) Hildoceras apertum (140867 147158 147159)
Bifrons182.0 - 175.6Hungary Hildoceras apertum (108087 108092 108464 108465 108467 147246 147247 147248 147251)
Bifrons182.0 - 175.6Spain (Cantabria) Hildoceras apertum (222299 222301 222302 222303)
Bifrons182.0 - 175.6Morocco Hildoceras apertum (228351)
Bifrons182.0 - 175.6Spain Hildoceras apertum (119601 119602 146929 146930 169666 169667 169670)
Bifrons182.0 - 175.6Italy Hildoceras apertum (147037 147039 147040)
Bifrons182.0 - 175.6France Hildoceras apertum (148780 148783 148785 161649)
Middle Toarcian182.0 - 175.6Spain (Murcia) Hildoceras apertum (201430 201431 201432 201433 201434 201456 201457 201458 201459 201460)
Middle Toarcian - Late/Upper Toarcian182.0 - 175.6Morocco (Taza-Al Hoceima-Taounate) Hildoceras apertum (234054)