• Source: Heptaxodontidae

Heptaxodontidae, rarely called giant hutia, is an extinct family of large rodents known from fossil and subfossil material found in the West Indies. One species, Amblyrhiza inundata, is estimated to have weighed between 50 and 200 kg (110 and 440 lb), reaching the weight of an eastern gorilla. This is twice as large as the capybara, the largest rodent living today, but still much smaller than Josephoartigasia monesi, the largest rodent known. These animals were probably used as a food source by the pre-Columbian peoples of the Caribbean.
Heptaxodontidae contains no living species and the grouping seems to be paraphyletic and arbitrary, however. One of the smaller species, Quemisia gravis, may have survived as late as when the Spanish began to colonize the Caribbean.
Despite the vernacular name, heptaxodontids are not closely related to the extant hutias of the family Echimyidae. Heptaxodontids are thought to be more closely related to the chinchillas.




Taxonomy


Heptaxodontidae is divided into two subfamilies and contains six species in five genera.

Family Heptaxodontidae
Subfamily Heptaxodontinae
Genus Amblyrhiza
Amblyrhiza inundata from Anguilla and St. Martin
Genus Elasmodontomys
Elasmodontomys obliquus from Puerto Rico
Genus Quemisia
Quemisia gravis from Hispaniola
Genus Xaymaca
Xaymaca fulvopulvis from Jamaica
Subfamily Clidomyinae
Genus Clidomys
Clidomys osborni from Jamaica




See also


Island gigantism




References






= Bibliography

=
Biknevicius, A. R.; McFarlane, Donald A. & MacPhee, R. D. E. (1993): Body size in Amblyrhiza inundata (Rodentia: Caviomorpha), an extinct megafaunal rodent from the Anguilla Bank, West Indies: estimates and implications. American Museum Novitates 3079: 1-26. PDF fulltext
MacPhee, R. D. E. & Flemming, C. (2003): A possible heptaxodontine and other caviidan rodents from the Quaternary of Jamaica. American Museum Novitates 3422: 1-42. PDF fulltext
Nowak, Ronald M. 1999. Walker's Mammals of the World, 6th edition. Johns Hopkins University Press, 1936 ISBN 0-8018-5789-9
Woods, C. A. 1989. Biogeography of West Indian rodents. Pages 741–797 in Biogeography of the West Indies: Past Present and Future. Sandhill Crane Press, Gainesville.
Woods, C.A.; Paéz, R.C.; Kilpatrick, C.W. (2001). "Insular Patterns and Radiations of West Indian Rodents". In Woods, C.A.; Sergile, F.E. (eds.). Biogeography of the West Indies: Patterns and Perspectives. Boca Raton, London, New York, and Washington, D.C.: CRC Press. pp. 335–354. doi:10.1201/9781420039481-18. ISBN 978-0-8493-2001-9.

Kata Kunci Pencarian:

• Hutia
• Landak
• Heptaxodontidae
• Caviomorpha
• Porcupine
• Mammal classification
• Hutia
• Naked mole-rat
• List of rodents
• List of mammals of North America
• Blunt-toothed giant hutia
• Laotian rock rat