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Hypophylloceras onoense

Cephalopoda - Phylloceratida - Phylloceratidae

Taxonomy
Phylloceras onoensis was named by Stanton (1895) [DISTRIBUTION: Aptian; California.]. It is a 3D body fossil. It is the type species of Phylloceras (Hypophylloceras).

It was recombined as Phylloceras (Hypophylloceras) onoense by Wright and Kennedy (1984) and Khiami and Murphy (1988); it was recombined as Hypophylloceras onoense by Packard (1960), Avram and Gradinaru (1993), Wright et al. (1996) and Murphy and Rodda (2006).

Sister species lacking formal opinion data
H. californicatus, H. onoensis, Phylloceras masiaposensum

Synonyms
Synonymy list
YearName and author
1895Phylloceras onoensis Stanton p. 74
1896Phylloceras paquieri Sayn p. 765
1938Phylloceras onoensis Anderson p. 142 figs. Plate 11, figures1, 2
1960Hypophylloceras onoense Packard p. 422 figs. P1. 55, figs. 1-4; pl. 56, fig. 1
1984Phylloceras (Hypophylloceras) onoense Wright and Kennedy p. 38
1988Phylloceras (Hypophylloceras) onoense Khiami and Murphy pp. 589 - 590 figs. Figures 5.1, 5.2, 6.1-6.5
1993Hypophylloceras onoense Avram and Gradinaru p. 671
1996Hypophylloceras onoense Wright et al. p. 1
2006Hypophylloceras onoense Murphy and Rodda pp. 50 - 53 figs. Plate 9, Figures 1-4; Plate 9, ?Figures 5-9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderPhylloceratida(Zittel 1884)
superfamilyPhylloceratoidea(Zittel 1884)
familyPhylloceratidaeZittel 1884
subfamilyPhylloceratinaeZittel 1884
genusHypophyllocerasSuess 1865
speciesonoense()

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.

†Hypophylloceras onoense Stanton 1895
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Invalid names: Phylloceras paquieri Sayn 1896 [synonym]
Diagnosis
ReferenceDiagnosis
M. N. Khiami and M. A. Murphy 1988Adult shells with fine ribs, constrictions, diphyllic saddles; compressed, highly involute shell.
M. A. Murphy and P. U. Rodda 2006A species of Hypophylloceras with biconvex constrictions in the early mature stages (up to a diameter of ~ 80 mm) and very fine riblets.