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Aulacostephanus (Aulacostephanus) yo

Cephalopoda - Ammonitida - Aulacostephanidae

Taxonomy
Ammonites yo was named by d'Orbigny (1845).

It was recombined as Aulacostephanus (Aulacostephanus) yo by Mesezhnikov (1984).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1845Ammonites yo d'Orbigny p. 545 fig. 210
1984Aulacostephanus (Aulacostephanus) yo Mesezhnikov p. 121 figs. Pl 36, figs 1,2; pl 44, fig 2

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctoidea(Steinman 1890)
familyAulacostephanidaeSpath 1924
genusAulacostephanus
subgenusAulacostephanusSutner and Pompeckj 1896
speciesyo(d'Orbigny 1845)

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.

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Diagnosis
No diagnoses are available