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Pleiolama mckennai

Mammalia - Camelidae

Taxonomy
Pleiolama mckennai was named by Webb and Meachen (2004). Its type specimen is F:AM 25078, a partial skeleton, and it is a 3D body fossil. Its type locality is Kat Quarry, which is in a Clarendonian terrestrial horizon in the Ash Hollow Formation of Nebraska. It is the type species of Pleiolama.

Synonymy list
YearName and author
2004Pleiolama mckennai Webb and Meachen pp. 351-358 figs. 1, 2, 3, 4, 5, 6

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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()
—Mammaliamorpha
—Mammaliaformes
RankNameAuthor
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
familyCamelidae
subfamilyCamelinaeGray 1821
tribeLaminiWebb 1965
genusPleiolama
speciesmckennai

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.

†Pleiolama mckennai Webb and Meachen 2004
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Diagnosis
ReferenceDiagnosis
S. D. Webb and J. A. Meachen 2004The new species is larger than Pleiolama vera, with shorter diastemata before the cheek tooth series; P3 and P3 are unreduced; P3 has a nearly complete lingual crescent, and its antero- lingual portion is more fully developed than in Pleiolama vera. The upper and lower molars are less fully hypsodont than in any other Lamini. The metapodials are moderately long and slender.
The new species differs from Alforjas magnifon- tis in having a nearly complete lingual crescent on P3. It has a large lacrimal vacuity, whereas A. mag- nifontis lacks one in the type and has only a small one in the paratype. The posterior narial opening is broad and lies opposite M2. The large postglenoid process articulates with the mandibular condyle. The metacarpals are more than 400 mm long, as compared with maximum length of about 300 mm in Alforjas magnifontis (new combination, see dis- cussion).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserf
Diet 2: browserf
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-31 16:42:02
Source: f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Nowak 1999, Carroll 1988, Hendy et al. 2009, Nowak 1991, Lillegraven 1979

Age range: Clarendonian or 12.50000 to 9.40000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Clarendonian12.5 - 9.4USA (Nebraska) Pleiolama mckennai (type locality: 18218)