PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Oldfieldthomasia

Mammalia - Notoungulata - Oldfieldthomasiidae

Taxonomy

Oldfieldthomasia was named by Ameghino (1901). It is the type genus of Oldfieldthomasiidae.

It was assigned to Acoelodidae by Ameghino (1901); and to Oldfieldthomasiidae by Simpson (1967).

Species

O. anfractuosa, O. debilitata (syn. Antepithecus innexus, O. cuneata, O. furcata, O. plicata, O. conifera, O. cingulata, O. transversa), O. parvidens (syn. O. pulchella)

Synonymy list

Year	Name and author
1901	Oldfieldthomasia Ameghino p. 370
1967	Oldfieldthomasia Simpson

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida

Rank	Name	Author
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Afrotheria	Stanhope et al. 1998
—	Paenungulatomorpha
—	Paenungulata	Simpson 1945
—	Sudamericungulata
order	Notoungulata
family	Oldfieldthomasiidae	Simpson 1945
genus	Oldfieldthomasia

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.

G. †Oldfieldthomasia Ameghino 1901

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†Oldfieldthomasia anfractuosa Ameghino 1901

†Oldfieldthomasia debilitata Ameghino 1901

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Invalid names: Antepithecus innexus Ameghino 1904 [objective synonym], Oldfieldthomasia cingulata Ameghino 1901 [synonym], Oldfieldthomasia conifera Ameghino 1901 [synonym], Oldfieldthomasia cuneata Ameghino 1901 [synonym], Oldfieldthomasia furcata Ameghino 1901 [synonym], Oldfieldthomasia plicata Ameghino 1904 [synonym], Oldfieldthomasia transversa Ameghino 1901 [synonym]

†Oldfieldthomasia parvidens Ameghino 1901

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Invalid names: Oldfieldthomasia pulchella 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: Ji et al. 2002, Carroll 1988, Lillegraven 1979, MacFadden et al. 1996, Hendy et al. 2009

Age range: base of the Casamayoran to the top of the Bartonian or 56.00000 to 38.00000 Ma

Collections (16 total)

Time interval	Ma	Country or state	Original ID and collection number
Casamayoran	56.0 - 48.0	Argentina (Chubut)	O. sp. (175739 175743)
Lutetian - Bartonian	47.8 - 38.0	Argentina (Chubut)	O. debilitata (176164)
Middle Eocene - Early/Lower Miocene	47.8 - 15.97	Argentina (Chubut)	O. sp. (176461)
Bartonian	41.3 - 38.0	Argentina (Chubut)	O. anfractuosa (176163) O. debilitata (49900 49902 175744 176180 176181 176182 176185 176186 176191) O. debilitata, O. furcata, O. cuneata, O. cingulata, O. conifera, O. parvidens, O. pulchella, O. transversa, Antepithecus innexus, O. plicata (13779) Oldfieldthomasia indet. (176169)