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Isotemnus ctalego

Mammalia - Notoungulata - Isotemnidae

Taxonomy
Isotemnus ctalego was named by Simpson (1935). Its type specimen is Amer. Mus. No. 28568, a mandible (part of right lower jaw with M1-4), and it is not a trace fossil. Its type locality is Cañadón Hondo, Kibenikhoria Faunal Zone, which is in a Riochican alluvial fan sandstone in the Las Flores Formation of Argentina.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1935Isotemnus ctalego Simpson p. 15
1967Isotemnus ctalego 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
genusIsotemnus
speciesctalego

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.

Isotemnus ctalego Simpson 1935
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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: MacFadden et al. 1996, Hendy et al. 2009, Ji et al. 2002, Lillegraven 1979, Carroll 1988

Age range: Riochican or 57.00000 to 55.80000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Riochican57.0 - 55.8Argentina (Chubut) Isotemnus ctalego, Isotemnidae indet. (type locality: 14205) Isotemnus primitivus (13781)