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Crocodylus affinis

Osteichthyes

Taxonomy
Crocodylus affinis was named by Marsh (1871). Its type specimen is YPM 1345, a skull (Skull and mandible), and it is a 3D body fossil. Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

It was considered a nomen dubium by Jouve et al. (2008), Puértolas et al. (2011).

Sister species lacking formal opinion data
C. biporcatus, C. bugtiensis, C. gaudensis, C. nilocticus

Synonyms
  • Crocodilus clavis was named by Cope (1871) [type from "the upper waters of Bitter Creek, Wyoming Territory"]. It is a 3D body fossil.

    It was recombined as Crocodylus clavis by Hay (1902), Hay (1930); it was synonymized subjectively with Crocodylus affinis by Brochu (2000).
  • Crocodilus liodon was named by Marsh (1871). Its type specimen is YPM 1350(b), a partial skeleton (A very fragmentary skeleton including several vertebrae, the left quadrate, rostral fragments, and articulars and surangulars), and it is a 3D body fossil. Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

    It was recombined as Crocodylus liodon by Hay (1902), Hay (1930); it was synonymized subjectively with Crocodylus affinis by Norell and Storrs (1989).
  • Crocodilus grinnelli was named by Marsh (1871). Its type specimen is YPM 1344, a partial skeleton (A fragmentary skeleton and skull), and it is a 3D body fossil. Its type locality is Marsh's Fork (Upper Bridger), which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

    It was recombined as Crocodylus grinnellii by Hay (1902); it was recombined as Crocodylus grinnelli by Hay (1930); it was synonymized subjectively with Crocodylus affinis by Norell and Storrs (1989).
  • Crocodilus brevicollis was named by Marsh (1871). Its type specimen is YPM 1349, a set of vertebrae (Three cervical vertebrae), and it is a 3D body fossil. Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

    It was recombined as Crocodylus brevicollis by Hay (1902); it was synonymized subjectively with Crocodylus affinis by Norell and Storrs (1989).
  • Crocodilus grinnelli herpichanus was named by Troxell (1925). Its type specimen is YPM 300, a skeleton (Skull and skeleton), and it is a 3D body fossil.

    It was synonymized subjectively with Crocodylus affinis by Norell and Storrs (1989).
  • Brachyuranochampsa zangerli was named by Mook (1962). Its type specimen is AMNH 6048, a partial skull (skull without lower jaws with a few parts missing), and it is a 3D body fossil. Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

    It was synonymized subjectively with Crocodylus affinis by Brochu (2000).
Synonymy list
YearName and author
1871Crocodilus clavis Cope p. 485
1871Crocodilus brevicollis Marsh
1871Crocodylus affinis Marsh
1871Crocodilus liodon Marsh p. 104
1871Crocodilus grinnelli Marsh p. 105
1872Crocodilus clavis Cope
1875Crocodilus liodon Cope p. 33
1902Crocodylus affinis Hay p. 512
1902Crocodylus brevicollis Hay p. 512
1902Crocodylus clavis Hay p. 512
1902Crocodylus grinnellii Hay p. 512
1902Crocodylus liodon Hay p. 513
1921Crocodylus affinis Mook p. 1
1925Crocodilus grinnelli herpichanus Troxell
1930Crocodylus affinis Hay p. 153
1930Crocodylus clavis Hay p. 153
1930Crocodylus grinnelli Hay p. 153
1930Crocodylus liodon Hay p. 154
1933Crocodilus clavis Mook p. 7
1962Brachyuranochampsa zangerli Mook p. 1 figs. 1-2
2000Crocodylus affinis Zonneveld et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
—SuchiaKrebs 1974
—Paracrocodylomorpha
—Loricata(Merrem 1820)
—Crocodylomorpha()
—Solidocrania
suborderCrocodyliformes
—MesoeucrocodyliaWhetstone and Whybrow 1983
—NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
—Crocodylia(Owen 1842)
—LongirostresCuvier
—Crocodyloidea(Deraniyagala 1939)
—Crocodylidae(Cuvier 1807)
—Crocodylinae(Cuvier 1807)
genusCrocodylusLaurenti 1768
speciesaffinisMarsh 1871

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.

†Crocodylus affinis Marsh 1871
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Invalid names: Brachyuranochampsa zangerli Mook 1962 [synonym], Crocodilus brevicollis Marsh 1871 [synonym], Crocodilus clavis Cope 1871 [synonym], Crocodilus grinnelli Marsh 1871 [synonym], Crocodilus grinnelli herpichanus Troxell 1925 [synonym], Crocodilus liodon Marsh 1871 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marineuc
Locomotion: actively mobilec
Life habit: planktonicp
Diet: carnivoreuc
Created: 2009-01-03 20:38:59
Modified: 2009-01-03 22:38:59
Source: c = class, subp = subphylum, p = phylum, uc = unranked clade
References: Carroll 1988, Benton 1983, Kiessling 2004, Hendy et al. 2009, Bush and Bambach 2015, Bambach et al. 2007

Age range: base of the Wasatchian to the top of the Uintan or 56.00000 to 39.70000 Ma

Collections (19 total)


Time interval Ma Country or state Original ID and collection number
Wasatchian56.0 - 51.1USA (Wyoming) Crocodylus affinis (15665)
Wasatchian - Bridgerian56.0 - 45.9USA (Wyoming) Crocodylus affinis (15669)
Bridgerian51.1 - 45.9USA (Wyoming) Crocodilus grinnelli (16282 167354) Crocodylus affinis (15837 16235 16264 16265 16266 16267 16268 16270 16272 16273 16274 70257) Crocodylus affinis, Brachyuranochampsa zangerli, Crocodilus liodon, Crocodilus brevicollis (type locality: 16228) Crocodylus affinis, Crocodylus acer (27269)
Uintan45.9 - 39.7USA (Utah) Crocodilus clavis (16656)