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Thomashuxleya externa

Mammalia - Notoungulata - Isotemnidae

Taxonomy
Thomashuxleya externa was named by Ameghino (1901). It is a 3D body fossil. Its type locality is Río Chico Este, which is in a Lutetian terrestrial horizon in Argentina.

Synonyms
Synonymy list
YearName and author
1901Thomashuxleya artuata Ameghino p. 413
1901Thomashuxleya externa Ameghino p. 414
1967Thomashuxleya externa Simpson

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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()
RankNameAuthor
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—AfrotheriaStanhope et al. 1998
—Paenungulatomorpha
—PaenungulataSimpson 1945
—Sudamericungulata
orderNotoungulata
suborderToxodontiaAmeghino 1887
familyIsotemnidae
genusThomashuxleya
speciesexterna

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.

†Thomashuxleya externa Ameghino 1901
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Invalid names: Thomashuxleya artuata Ameghino 1901 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialsubc
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2009-01-05 17:11:49
Modified: 2009-01-05 19:11:49
Source: o = order, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Lillegraven 1979, Ji et al. 2002, MacFadden et al. 1996, Hendy et al. 2009

Age range: base of the Casamayoran to the top of the Lutetian or 56.00000 to 41.30000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Casamayoran56.0 - 48.0Argentina (Chubut) Thomashuxleya artuata, Thomashuxleya externa (176285) Thomashuxleya externa (39295)
Lutetian47.8 - 41.3Argentina (Chubut) Thomashuxleya externa (44956 type locality: 176165 176170 176172 176173 176174)
Lutetian - Bartonian47.8 - 38.0Argentina (Chubut) Thomashuxleya externa (176164)