PBDB Taxon

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

Notioprogonia

Mammalia - Notoungulata

Taxonomy

Notioprogonia was named by Simpson (1934) [incorrectly spelt by Carroll as "Notoprogonia"].

It was assigned to Notoungulata by Simpson (1934), Simpson (1935), Simpson (1948), McKenna (1975), Pascual et al. (1978), Vucetich (1980), Marshall and de Muizon (1983) and Carroll (1988).

Subtaxa

Perutheriidae, Satshatemnus

Synonymy list

Year	Name and author
1934	Notioprogonia Simpson p. 10
1935	Notioprogonia Simpson p. 11
1948	Notioprogonia Simpson
1975	Notioprogonia McKenna p. 43
1978	Notioprogonia Pascual et al.
1980	Notioprogonia Vucetich
1983	Notioprogonia Marshall and de Muizon p. 147
1988	Notioprogonia Carroll

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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
suborder	Notioprogonia
suborder	Notioprogonia

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.

Subor. †Notioprogonia Simpson 1934

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Fm. †Perutheriidae Grambast et al. 1967

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G. †Perutherium Grambast et al. 1967

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†Perutherium altiplanense Grambast et al. 1967

G. †Satshatemnus Soria 1989

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†Satshatemnus bonapartei Soria 1989

Diagnosis

Reference	Diagnosis
G. G. Simpson 1934	An early suborder of Notoungulata, including some primitive, rather generalized forms and a few ancient divergent lines superficially specialized but basically primitive. Dentitioncompleteorwith I3CG1P- variouslyreduced. Allcheekteethbrachyo- dont,withoutcement. Upperpremolarsprogressivelycomplicated,butalltriangular or nearly so, with protocone at least on p2_4 and hypocone very feeble or absent. Upper molars transverse, with strong parastyle, well formed ectoloph and oblique protoloph,butmetalophvariableandoftenimperfect. Crochetpresent,anteropos- teriorwhenelongated,andgenerallyfreeofectoloph. Othersecondaryfoldsorcrests slightorabsent. M1_2quadrate,withstronghypocones,nearlyorquiteequaltopro- tocones. M3largebuttriangular,hypoconesmallorunrecognizableassuch. Lower premolarsessentiallybicrescentic,withsubequaltrigonidandtalonid. Lowermolars withveryshorttrigonidsandlongtalonids. Trigonidessentiallyasingletransverse lophid, anterior wing reduced, paraconid inconspicuous and median or relatively external. Talonidswithastrong,elongate,crescenticlophidandsimple,transverse, crested entoconid pillar, without secondary connections or crests. Rostrum,asfarasknown,short,deep,andrathernarrow. Naresterminal. Zygomataarisingoppositeanteriormolars. Cranium(Notostylopidae,unknownin other families but probably similar) markedly triangular between squared zygomata. Strongpostorbitalconstriction. Endocranialcastmuchinastypotheres,butmore primitive. Earregionofgeneralizednotoungulatetype,epitympanicsinusrelatively small, porus low, ossified meatus short and nearly horizontal, tympanic crested, hypotympanic sinus large and globular, extending far ventral to basisphenoid, cranio-facial flexion slight. Mandible rather elongate and slender, tooth series nearly straight.