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Pericotoxodon platignathus

Mammalia - Notoungulata - Toxodontidae

Discussion

Holotype: UCMP 40199, a partial cranium with left I1-2, P2-4, M1-3 and right P3-4, M1-3, with a portion of the right premaxilla and the internasal margin of the right nasal Etymology: The species name is a combination of two greek components, platy, flat, broad, and gnathus, jawed

Taxonomy
Pericotoxodon platignathus was named by Madden (1997). Its type specimen is UCMP 40199, a partial skeleton (a partial cranium with left I1-2, P2-4, M1-3 and right P3-4, M1-3), and it is a 3D body fossil. Its type locality is UCMP Locality V5043, La Venta Faun, which is in a Laventan terrestrial sandstone in the Villavieja Formation of Colombia.

Synonymy list
YearName and author
1997Pericotoxodon platignathus Madden

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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
—AfrotheriaStanhope et al. 1998
—Paenungulatomorpha
superorderPaenungulata
—Sudamericungulata
orderNotoungulata
suborderToxodontiaAmeghino 1887
—Eutoxodontia
familyToxodontidae
subfamilyDinotoxodontinae
genusPericotoxodon
speciesplatignathus

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
ReferenceDiagnosis
R. H. Madden 1997Pericotoxodon platignathus is distinct from other toxodontidae in having an adult mandibular ramus inferolaterally deepened beneath lower m2; buccolingually broad lower molar entolophids; individually variable (persistently bifurcate or simple) upper molar primary lingual enamel fold; very ephemeral upper molar accessory lingual enamel folds or fossettes; Upper M1 and M2 with distolingual enamel plication; Upper M3 distolingual fold variably present; ephemeral upper P4 lingual enamel fold; ephemeral lower molar accessory fossetid; buccolingually broad lower p2 talonid; nad persistently open m3 ento-hypoconulid fold.
Measurements
No measurements are available
Composition: phosphaticsubp
Maximum body mass: 798.4 kgs
Minimum body mass: 798.4 kgs
Body mass estimate: 798.4 kg
Body mass source: publisheds
Environment: terrestrials
Locomotion: actively mobilec
Life habit: ground dwellings
Diet: grazers
Reproduction: viviparoussubc
Created: 2013-05-30 02:34:20
Modified: 2013-05-29 11:39:12
Source: s = species, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Madden 1997, Carroll 1988, Hendy et al. 2009

Age range: Laventan or 13.80000 to 11.00000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Laventan13.8 - 11.0Colombia Pericotoxodon platignathus (13653)
Laventan13.8 - 11.0Peru Pericotoxodon platignathus (107992)
Laventan13.8 - 11.0Peru (Ucayali) Pericotoxodon platignathus (144793 144794 163841 163842)
Laventan13.8 - 11.0Colombia (Huila) Pericotoxodon platignathus (133693 134806 136211 143790 type locality: 145234 186628 186629 187120 187888 188022 188023)