• Source: Parastrapotherium

Parastrapotherium is an extinct genus of South American land mammal that existed from the Late Oligocene (Deseadan SALMA) to the Early Miocene (Colhuehuapian SALMA). The genus includes some of the largest and smallest known astrapotherian, but at present no generally recognized description can adequately characterize it.




Description



The genus was first described by Ameghino 1895. He distinguished it from the Santacrucian (late Early Miocene) Astrapotherium (Burmeister 1879) based on the greater number of upper and lower molars. Although later researchers disagreed and concluded that Ameghino based his conclusion on very fragmentary materials, they mostly agreed to distinguish the genus from other groups of astrapotherians.




Species


The following species have been recognised:

Parastrapotherium cingulatum Ameghino 1894
Parastrapotherium ephebicum Ameghino 1894
Parastrapotherium holmbergi Ameghino 1894
Parastrapotherium lemoinei Ameghino 1894
Parastrapotherium trouessarti Ameghino 1894




Distribution


Fossils of Parastrapotherium have been found in:

Oligocene
Deseado Formation, Argentina
Sarmiento Formation, Argentina
Miocene
Cerro Bandera Formation, Argentina
Sarmiento Formation, Argentina




References






= Bibliography

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Kata Kunci Pencarian:

• Parastrapotherium
• Astrapotherium
• Liarthrus
• Astrapotheriidae
• Granastrapotherium
• Litopterna
• Toxodon
• South American native ungulates
• Micrauchenia
• Coniopternium