Trachytherus spegazzinianus Ameghino 1889 (notoungulate)

Mammalia - Notoungulata - Mesotheriidae

Alternative combination: Eutrachytherus spegazzinianus

Synonyms: Ameghinotherium curuzucuatiense Podestá 1899, Anatrachytherus soriai Reguero and Castro 2004, Coresodon cancellatus Ameghino 1901, Eutrachytherus conturbatus Ameghino 1891, Isoproedrium solitarium Ameghino 1894, Proedium solitarium Ameghino 1894, Proedrium solitarium Ameghino 1894, Trachytherus conturbatus Ameghino 1891

Belongs to Trachytherus according to G. Billet et al. 2008

See also Ameghino 1894, Ameghino 1894, Ameghino 1897, Ameghino 1901, Ameghino 1904, Lydekker 1894, Reguero and Castro 2004 and Shockey et al. 2009

Sister taxa: Trachytherus alloxus, Trachytherus ramirezi, Trachytherus subandinus, Eutrachytherus modestus, Eutrachytherus grandis

Type specimens:

  • Trachytherus spegazzinianus: Its type locality is Deseadan of Patagonia, which is in a Deseadan terrestrial horizon in the Sarmiento Formation of Argentina
  • Ameghinotherium curuzucuatiense: MACN 6867, a skull (incomplete skull with abrased cheekteeth). Its type locality is Arroyo Castillo, which is in a Deseadan terrestrial horizon in the Fray Bentos Formation of Argentina.
  • Anatrachytherus soriai: MACN A52-490, a mandible (mandible with right i1-2, p1 alveolus, p2-m2; left i1-2, p1 alveolus, p2-m3). Its type locality is Cabeza Blanca, which is in a Deseadan terrestrial shale/claystone in the Sarmiento Formation of Argentina.
  • Coresodon cancellatus: MACN A52-566, a maxilla (right maxillary with dP3-4, M1). Its type locality is Cabeza Blanca, which is in a Deseadan terrestrial shale/claystone in the Sarmiento Formation of Argentina.
  • Proedium solitarium: MACN A52-495, a mandible (symphysis without teeth). Its type locality is La Flecha, which is in a Deseadan terrestrial mudstone in the Deseado Formation of Argentina.
  • Trachytherus conturbatus:

Ecology: scansorial herbivore

Distribution:

• Deseadan of Argentina (5 collections), Bolivia (1), Peru (1)

• Oligocene of Argentina (1)

Total: 8 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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