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Pseudoprotoceras longinaris

Mammalia - Protoceratidae

Taxonomy
Pseudoprotoceras longinaris was named by Cook (1934). Its type specimen is No. HC507, a partial skeleton (anterior portion of a skull with associated astragalus and navicular), and it is not a trace fossil. Its type locality is Chadronia Pocket, which is in a Chadronian terrestrial siltstone in the Chadron Formation of Nebraska.

It was synonymized subjectively with Poabromylus kayi by Wilson (1974).

Synonymy list
YearName and author
1934Pseudoprotoceras longinaris Cook p. 149
1940Pseudoprotoceras longinaris Scott p. 564
1981Pseudoprotoceras longinaris Emry and Storer
1987Pseudoprotoceras longinaris Kihm
1998Pseudoprotoceras longinaris Prothero

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Ruminantiamorpha
familyProtoceratidae
genusPseudoprotoceras
specieslonginaris

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
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserf
Reproduction: viviparoussubc
Created: 2005-08-31 14:39:46
Modified: 2009-01-07 18:24:42
Source: f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Nowak 1999, Lillegraven 1979, Carroll 1988, Prothero 1998

Age range: base of the Middle Chadronian to the top of the Chadronian or 37.20000 to 33.90000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Wyoming) Pseudoprotoceras longinaris (16963 16964 17045)
Chadronian37.2 - 33.9USA (South Dakota) Poabromylus kayi (16885 16938)
Chadronian37.2 - 33.9USA (Nebraska) Pseudoprotoceras longinaris (16918 type locality: 16930 16940 16941 17014 17033)
Late/Upper Chadronian37.2 - 33.9USA (Colorado) Pseudoprotoceras longinaris (85117)
Middle Chadronian - Late/Upper Chadronian37.2 - 33.9USA (Colorado) Pseudoprotoceras longinaris (156988)