Pelorovis

Pelorovis
Temporal range: Late Pliocene–Holocene
P. oldowayensis skull
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Genus: †Pelorovis
Species

Pelorovis antiquus
Pelorovis howelli
Pelorovis oldowayensis
Pelorovis turkanensis

Pelorovis ("Prodigious/Monstrous Ovis") is an extinct genus of African wild cattle, which first appeared in the Pliocene, 2.5 million years ago[1]., and became extinct at the end of the Late Pleistocene about 12.000 years ago or even during the Holocene, some 4,000 years ago[2]. Surprisingly, recent detailed anatomical and morphometric studies come to the conclusion, that Pelorovis is probably not monophyletic. According to this findings, the early forms of the genus (P. turkanensis und P. oldowayensis) are close relatives, and possibly the first members, of the genus Bos. In contrast, the late Pleistocene form (Pelorovis antiquus) seems to be a close relative of the modern African buffalo (Syncerus caffer)[3].

Description

Pelorovis resembled an African buffalo, except for its long, curved horns. The bony cores of the horns were each about 1 metre (3.3 ft) long; when covered with keratin (which does not survive fossilisation) they could have been up to twice this length.[4] The horns pointed away from the head, each forming a half circle in the species Pelorovis oldowayensis and Pelorovis turkanensis[5].

The horns of Pelorovis antiquus were also magnificent but resembled in shape more those of the Water buffalo (Bubalus). P. antiquus was even placed in the Genus Bubalus by early specialists. Pelorovis oldowayensis was broadly the same size as modern African buffalo, but its legs were longer, and the elongated head of this species was reminiscent to those of the modern Alcelaphinae. Pelorovis antiquus was about the same size, but it was more robust.

Pelorovis antiquus disappeared around 12,000 years ago from southern and eastern Africa. Fossil and archaeological evidence indicates, that this species lived in north Africa until 4,000 years ago[6]. Pelorovis oldowaywensis occurred in sub-saharan Africa and disappeared 800,000 years ago.

The best fossils of Pelorovis oldowayensis are known from the Olduvai Gorge in Tanzania, a complete skeleton of Pelorovis antiquus was found near Djelfa in Algeria.

References

  1. ^ Alan Turner & Mauricio Anton: Evolving Eden, An Illustrated Guide to the Evolution of the African Large-Mammal Fauna. Columbia University Press, New York 2004 ISBN 0-231-11944-5 (pp. 159-167)
  2. ^ Ronald M. Nowak: Walker's Mammals of the World. Johns Hopkins University Press, 1999 ISBN 0-8018-5789-9
  3. ^ Bienvenido Martínez-Navarro, Juan Antonio Pérez-Claros, Maria Rita Palombo, Lorenzo Rook, and Paul Palmqvist: The Olduvai buffalo Pelorovis and the origin of Bos. Quaternary Research Volume 68, Issue 2, September 2007, Pages 220-226. online
  4. ^ Palmer, D., ed (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 281. ISBN 1-84028-152-9. 
  5. ^ Alan Turner & Mauricio Anton: Evolving Eden, An Illustrated Guide to the Evolution of the African Large-Mammal Fauna. Columbia University Press, New York 2004 ISBN 0-231-11944-5 (pp. 159-167)
  6. ^ Ronald M. Nowak: Walker's Mammals of the World. Johns Hopkins University Press, 1999 ISBN 0-8018-5789-9