PBDB Taxon

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Chriacus baldwini

Mammalia - Procreodi - Arctocyonidae

Taxonomy

Deltatherium baldwini was named by Cope (1882). It is a 3D body fossil.

It was synonymized subjectively with Chriacus pelvidens by Rigby (1976); it was recombined as Chriacus baldwini by Cope (1888), Scott (1892), Osborn and Earle (1895), Matthew (1897), Hay (1902), Hay (1930), Matthew (1937), Van Valen (1978), Tsentas (1981) and Rose (1996).

Synonyms

Chriacus schlosserianus was named by Cope (1888).

It was recombined as Epichriacus schlosserianus by Scott (1892); it was synonymized subjectively with Chriacus truncatus by Matthew (1937); it was synonymized subjectively with Tricentes truncatus by Schiebout (1974); it was synonymized subjectively with Chriacus baldwini by Van Valen (1978), Williamson and Lucas (1993) and Williamson (1996).
Metachriacus provocator was named by Simpson (1935). Its type locality is Upper Lebo Loc. 51, which is in a Torrejonian terrestrial horizon in the "Fort Union" (= Lebo) Formation of Montana.

It was recombined as Tricentes provocator by Rose (1981); it was synonymized subjectively with Chriacus truncatus by Robison (1986); it was recombined as Chriacus provocator by Archibald et al. (1987); it was synonymized subjectively with Chriacus baldwini by Van Valen (1978), Winterfeld (1982), Hartman (1986), Williamson and Lucas (1993) and Williamson (1996).
Oxyclaenus pearcei was named by Gazin (1941). Its type specimen is USNM 16186, a mandible (portions of right and left rami of the mandible with m2 and m3), and it is a 3D body fossil. Its type locality is Dragon Canyon, which is in a Torrejonian terrestrial horizon in the North Horn Formation of Utah.

It was synonymized subjectively with Chriacus baldwini by Williamson (1996).
Spanoxyodon latrunculus was named by Simpson (1935) [genotype]. Its type locality is Gidley Quarry, which is in a Torrejonian terrestrial horizon in the Fort Union Formation of Montana. It is the type species of Spanoxyodon.

It was synonymized subjectively with Chriacus baldwini by Van Valen (1978), Williamson and Lucas (1993) and Williamson (1996).
Tricentes crassicollidens was named by Cope (1884) [genotype]. It is the type species of Tricentes.

It was synonymized subjectively with Tricentes truncatus by Van Valen and Sloan (1965) and Schiebout (1974); it was synonymized subjectively with Chriacus truncatus by Robison (1986); it was synonymized subjectively with Chriacus baldwini by Van Valen (1978), Tsentas (1981), Williamson and Lucas (1993) and Williamson (1996).

Synonymy list

Year	Name and author
1882	Deltatherium baldwini Cope p. 463
1883	Deltatherium baldwini Cope p. 282
1884	Tricentes crassicollidens Cope p. 315
1888	Chriacus schlosserianus Cope p. 338
1888	Chriacus baldwini Cope p. 340
1892	Chriacus baldwini Scott p. 296
1892	Epichriacus schlosserianus Scott p. 296
1892	Tricentes crassicollidens Scott p. 297
1895	Chriacus baldwini Osborn and Earle
1895	Chriacus schlosserianus Osborn and Earle
1897	Tricentes crassicollidens Matthew p. 272
1897	Chriacus baldwini Matthew p. 274
1897	Chriacus schlosserianus Matthew p. 275
1902	Chriacus baldwini Hay p. 745
1902	Chriacus schlosserianus Hay p. 745
1902	Tricentes crassicollidens Hay p. 746
1930	Chriacus baldwini Hay p. 461
1930	Chriacus schlosserianus Hay p. 461
1930	Tricentes crassicollidens Hay p. 462
1935	Metachriacus provocator Simpson
1935	Spanoxyodon latrunculus Simpson
1937	Chriacus baldwini Matthew
1941	Oxyclaenus pearcei Gazin pp. 20 - 21 figs. Figure 12
1978	Chriacus baldwini Van Valen
1981	Tricentes provocator Rose
1981	Chriacus baldwini Tsentas
1987	Chriacus provocator Archibald et al.
1996	Chriacus baldwini Rose p. 1707

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()

Rank	Name	Author
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Theriamorpha	(Rowe 1993)
—	Theriiformes	()
—	Trechnotheria
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
order	Procreodi	Matthew 1915
family	Arctocyonidae	Murray 1866
genus	Chriacus	Cope 1883
species	baldwini	()

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.

†Chriacus baldwini Cope 1882

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Invalid names: Chriacus schlosserianus Cope 1888 [synonym], Metachriacus provocator Simpson 1935 [synonym], Oxyclaenus pearcei Gazin 1941 [synonym], Spanoxyodon latrunculus Simpson 1935 [synonym], Tricentes crassicollidens Cope 1884 [synonym]

Diagnosis

No diagnoses are available