Sivatherium

Sivatherium
Temporal range: Pliocene to Holocene, 5–0.01 Ma
↓
Skull of S. giganteum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Class: Mammalia
Order: Artiodactyla
Family: Giraffidae
Subfamily: †Sivatheriinae
Genus: †Sivatherium
Falconer & Cautley, 1836[1][2]
Species
  • S. giganteum (type)
  • ?S. hendeyi
  • S. maurusium
Synonyms
  • Libytherium
  • S. olduvaiense Hopwood, 1934

Sivatherium ("Shiva's beast") is an extinct genus of giraffid that ranged throughout Africa to the Indian Subcontinent. The species Sivatherium giganteum is the largest giraffid known, and also possibly the largest ruminant of all time.[3] The Afro-Asiatic species, S. maurusium, was once placed within the genus "Libytherium."

S. giganteum remains have been recovered from the Himalayan foothills, dating around 1,000,000 BCE. S. maurusium may have become extinct as recently as 8,000 years ago, as depictions that greatly resemble it are known from ancient rock paintings in the Sahara desert,[4] and in Central West India.[5]

Description

Modern, giraffe-like restoration in the MEPAN
Outdated, moose-like restoration

Sivatherium resembled the modern okapi, but was far larger, and more heavily built, being about 2.2 m (7.2 ft) tall at the shoulder, 3 m (9.8 ft) in total height with a weight up to 400–500 kg (880–1,100 lb).[6] A newer estimate has come up with an estimated body mass of about 1,250 kg (2,760 lb).[3] This would make Sivatherium the largest ruminant in history. This weight estimate is thought to be an underestimate, as it does not take into account the large horns possessed by males of the species. Sivatherium had a wide, antler-like pair of ossicones on its head, and a second pair of ossicones above its eyes. Its shoulders were very powerful to support the neck muscles required to lift the heavy skull.[4]

See also

References

  1. ↑ Sivatherium in the Paleobiology Database
  2. ↑ Falconer, Hugh; Cautley, P. T. (1836). "Sivatherium giganteum, a new fossil ruminant genus, from the valley of the Markanda, in the Sivalik branch of the Sub-Himalayan Mountains". Journal of the Asiatic Society of Bengal: 38–50.
  3. 1 2 Basu, Christopher; Falkingham, Peter L.; Hutchinson, John R. (January 2016). "The extinct, giant giraffid Sivatherium giganteum: skeletal reconstruction and body mass estimation". Biology Letters. 12 (1). doi:10.1098/rsbl.2015.0940.
  4. 1 2 Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 278. ISBN 1-84028-152-9.
  5. ↑ "Rock paintings show species that roamed India". www.newindianexpress.com. Retrieved 2016-09-14.
  6. ↑ http://www.geocities.ws/rsn_biodata/Data/Sivatherium_giganteum.html (in Portuguese)

Further reading

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