Diadiaphorus
Diadiaphorus robustus skull
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: †Litopterna
Family: †Proterotheriidae
Subfamily: †Proterotheriinae
Genus: †Diadiaphorus
Ameghino, 1887
Type species
†Diadiaphorus majusculus
Ameghino, 1887
Species
  • D. caniadensis
  • D. majusculus Ameghino, 1887
  • D. paranensis
  • D. sanctaecrucis
  • D. velox
Synonyms
Genus synonymy
  • Bunodontherium
    Mercerat, 1891
D. majusculus
  • Bunodontherium majusculum
    Mercerat, 1891
  • Diadiaphorus diplinthus
    Ameghino, 1894
  • Diadiaphorus robustus
    Ameghino, 1894
  • Diadiaphorus coelops
    Ameghino, 1904

Diadiaphorus is an extinct genus of litoptern mammal from the Miocene of Argentina (Ituzaingó, Pinturas, Chiquimil and Santa Cruz Formations) and Bolivia (Nazareno Formation), South America.

Description

Size comparison between a human and D. majusculus

Diadiaphorus closely resembled a horse, but was only around 1.2 metres (3.9 ft) in body length with a weight 70 kilograms (150 lb), similar to a modern sheep.[1] It had three toes, only one of which touched the ground. This toe had a large hoof; the two outer toes were rudimentary, much like those of early horses such as Merychippus. Unlike horses, however, Diadiaphorus lacked fused limb bones. Its skull was short and had a relatively large brain cavity. Judging from its low molars, Diadiaphorus ate soft vegetation, such as leaves.[2]

References

  1. ↑ D. Patterson, Bruce (2012) Bones, Clones, and Biomes: The History and Geography of Recent Neotropical Mammals p.92
  2. ↑ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 247. ISBN 1-84028-152-9.


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