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Notioprogonia
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), Carroll (1988).
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), Carroll (1988).
Subtaxa
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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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.
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. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Ji et al. 2002, MacFadden et al. 1996, Lillegraven 1979 | |||||
Age range: Late/Upper Paleocene or 59.24000 to 56.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Paleocene | Argentina (Tucumán) | Satshatemnus bonapartei (41607) | |
| Thanetian - Ypresian | Peru (Puno) | Perutherium altiplanense (28230) |