Parastrapotherium

Parastrapotherium
Temporal range: Late Oligocene–Early Miocene
P. giganteum tooth
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Subclass: Theria
Infraclass: Eutheria
Superorder: †Meridiungulata
Order: †Astrapotheria
Family: †Astrapotheriidae
Genus: †Parastrapotherium
Ameghino 1895
Species

See text

Parastrapotherium is an extinct genus of South American land mammal that existed from the Late Oligocene (Deseadan SALMA) to the Early Miocene (Colhuehuapian SALMA) 28.1 to 23.03 million years ago. The genus includes some of the largest and smallest known astrapotherian, but at present no generally recognized description can adequately characterize it.[1]

Description

Reconstruction in life of Parastrapotherium.

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.[1]

Species

[2]

Notes

  1. 1 2 Kramarz & Bond 2008, Introduction
  2. ↑ Parastrapotherium in the Paleobiology Database. Retrieved March 2013.

References

  • Ameghino, Florentino (1894). "Sur les oiseaux fossiles de Patagonie; et la faune mammalogique des couches à Pyrotherium". Boletin del Instituto Geográfico Argentino. 15: 501–660. OCLC 85042509. 
  • Ameghino, Florentino (1895). Première contribution à la connaissance de la faune mammalogique des couches à Pyrotherium. Buenos Aires: P.E. Coni. OCLC 40071157. 
  • Burmeister, Hermann (1879). Description physique de la République Argentine : d'après des observations personnelles et étrangères. 3 Animaux vertébrés, 1. partie, Mammifères vivants et éteints. Paris: Savy. p. 520. OCLC 162707154. 
  • Kramarz, Alejandro G.; Bond, Mariano (2008). "Revision of Parastrapotherium (Mammalia, Astrapotheria) and other Deseadan astrapotheres of Patagonia". Ameghiniana. 45 (3). Retrieved March 2013.  Check date values in: |access-date= (help)


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