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Hildoceras bifrons

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy
Ammonites bifrons was named by Bruguiere (1792). It is not extant.

It was recombined as Hildoceras bifrons by Guex (1972), Howarth (1992), Géczy and Szente (2006), Bécaud (2006), Delsate and Weis (2010) and Benzaggagh et al. (2022).

Sister species lacking formal opinion data

Synonyms
Synonymy list
YearName and author
1792Ammonites bifrons Bruguiere
1815Ammonites walcoti Sowerby p. 7 figs. Pl 106
1822Ammonites hildensis Young and Bird p. 254 figs. Pl 12, fig 1
1828Ammonites hildensis Young p. 254 figs. Pl 12, fig 1
1904Hildoceras angustisiphonatum Prinz
1972Hildoceras angustisiphonatum Guex figs. Pl 6, fig 3
1972Hildoceras bifrons Guex figs. Pl 6, fig 7; pl 7, fig 8
1992Hildoceras bifrons Howarth p. 184 figs. Pl 36, fig 4; pl 37, figs 1-10; pl 38, figs 3,7; text-fig 10D
2006Hildoceras bifrons Bécaud p. 90 figs. Pl 47, figs 1,3
2006Hildoceras angustisiphonatum Géczy and Szente figs. Pl 2, fig 3
2006Hildoceras bifrons Géczy and Szente figs. Pl 2, figs 4,5
2010Hildoceras bifrons Delsate and Weis figs. Pl 2, fig 6
2022Hildoceras bifrons Benzaggagh et al. p. 16 figs. 12F-J

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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
speciesbifrons(Bruguiere 1792)

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 bifrons Bruguiere 1792
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Invalid names: Ammonites hildensis Young and Bird 1822 [synonym], Ammonites walcoti Sowerby 1815 [synonym], Hildoceras angustisiphonatum Prinz 1904 [synonym]
Diagnosis
No diagnoses are available