PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Metoicoceras geslinianum

Cephalopoda - Ammonitida - Acanthoceratidae

Taxonomy

Ammonites geslinianum was named by d'Orbigny (1841). It is a 3D body fossil.

It was recombined as Metoicoceras geslinianum by Chancellor (1982), Cobban and Kennedy (1991), Meister et al. (1992), Barroso-Barcenilla (2004), Abdel-Gawad (2008), Wilmsen and Nagm (2013), Wilmsen and Nagm (2014) and Guendouz et al. (2022).

Subspecies

Metoicoceras whitei praecox

Synonyms

Metoicoceras whitei was named by Hyatt (1903). It is a 3D body fossil.

It was synonymized subjectively with Metoicoceras gibbosum by Cooper (1978); it was synonymized subjectively with Metoicoceras geslinianum by Chancellor (1982).
Metoecoceras boesei was named by Jones (1938). It is a 3D body fossil.

It was synonymized subjectively with Metoicoceras gibbosum by Cooper (1978); it was synonymized subjectively with Metoicoceras geslinianum by Chancellor (1982) and Cobban et al. (2008).
Metoicoceras frontierense was named by Cobban (1988).

It was synonymized subjectively with Metoicoceras geslinianum by Meister et al. (1992).
Metoicoceras kanabense was named by Hyatt (1903). Its type specimen is USNM 29409 and is a 3D body fossil.

It was synonymized subjectively with Metoicoceras gibbosum by Cooper (1978); it was synonymized subjectively with Metoicoceras geslinianum by Kirkland (1996).
Mammites gourdoni was named by de Grossouvre (1912).

It was recombined as Metoicoceras gourdoni by Wiedmann (1960); it was synonymized subjectively with Metoicoceras geslinianum by Kennedy et al. (1981).

Synonymy list

Year	Name and author
1841	Ammonites geslinianum d'Orbigny
1903	Metoicoceras kanabense Hyatt
1903	Metoicoceras whitei Hyatt
1903	Metoicoceras kanabense Hyatt p. 282 figs. pl. 15, figs, 9–11
1912	Mammites gourdoni de Grossouvre p. 20 figs. pl. 1. fig. 1
1938	Metoecoceras boesei Jones p. 127 figs. pl. 10, figs. 1-3
1960	Metoicoceras gourdoni Wiedmann pp. 716. 726
1982	Metoicoceras geslinianum Chancellor p. 83
1988	Metoicoceras frontierense Cobban
1991	Metoicoceras frontierense Cobban and Kennedy p. B7 figs. Pl 6, figs 11-15
1991	Metoicoceras geslinianum Cobban and Kennedy p. B8 figs. Pl 6, figs 1-10
1992	Metoicoceras geslinianum Meister et al. p. 66 figs. Pl 2, figs 1,3; text-fig 11
2004	Metoicoceras geslinianum Barroso-Barcenilla p. 96 figs. Pl 1, fig 5; pl 2, fig 1
2008	Metoicoceras geslinianum Abdel-Gawad p. 211 figs. Pl 1, figs 5,6
2013	Metoicoceras geslinianum Wilmsen and Nagm p. 662 figs. 12D,E, 13, 14
2014	Metoicoceras geslinianum Wilmsen and Nagm p. 216 fig. 9b,c
2022	Metoicoceras geslinianum Guendouz et al. p. 2167 fig. 5a

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Cephalopoda	Cuvier 1797

Rank	Name	Author
subclass	Ammonoidea	()
order	Ammonitida
suborder	Ammonitina	Hyatt 1889
superfamily	Acanthoceratoidea	(de Grossouvre 1894)
family	Acanthoceratidae	Grossouvre 1894
subfamily	Mammitinae	()
genus	Metoicoceras	Hyatt 1903
species	geslinianum	(d'Orbigny 1841)

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.

†Metoicoceras geslinianum d'Orbigny 1841

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†Metoicoceras whitei praecox Haas 1949

Invalid names: Mammites gourdoni de Grossouvre 1912 [synonym], Metoicoceras bosei Jones 1938 [synonym], Metoicoceras frontierense Cobban 1988 [synonym], Metoicoceras kanabense Hyatt 1903 [synonym], Metoicoceras whitei Hyatt 1903 [synonym]

Diagnosis

No diagnoses are available