巨爪地懶
巨爪地懶(學名:)是中新世晚期至更新世晚期一屬已滅絕的地懶。牠們的近親為二趾樹懶。牠們是北美洲的特有種,是二趾樹懶科下分佈最廣的,最北至阿拉斯加[1]及育空。[2]牠們是由游地懶演化而來,其下最早出現的物種是M. wheatleyi。模式種傑氏巨爪地懶(M. jeffersonii)體長可達 3米(9.8英尺),體重則超過 1,000 公斤[3]。
巨爪地懒属 | |
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Megalonyx wheatleyi的骨骼。 | |
科学分类 | |
界: | 动物界 Animalia |
门: | 脊索动物门 Chordata |
纲: | 哺乳纲 Mammalia |
目: | 披毛目 Pilosa |
科: | †巨爪地懶科 Megalonychidae |
亚科: | †巨爪地懒亚科 Megalonychinae |
属: | †巨爪地懒属 Megalonyx Jefferson, 1799 |
模式種 | |
†Megatherium jeffersonii Desmarest, 1822 | |
種 | |
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化石
巨爪地懶的學名是由美國總統湯瑪斯·傑佛遜於1797年所命名,其化石是來自維吉尼亞州。在愛荷華州西南部持續的挖掘發現了疑似巨爪地懶的家庭生活:一隻成年巨爪地懶與兩隻不同年齡的幼生一同被發現,估計成年的會照顧幼生的。[4][5]
參考
- Stock, C. . Science. 1942, 95: 552–3.
- McDonald, H. G.; Harington, C. R.; De Iuliis, G. (PDF). Arctic (Calgary, Alberta: The Arctic Institute of North America). September 2000, 53 (3): 213–20 [2008-08-16]. (原始内容存档 (PDF)于2020-07-03).
- . [2019-01-02]. (原始内容存档于2015-02-14).
- Semken and Brenzel. . [2009-09-25]. (原始内容存档于2009-01-01).
- Semken and Brenzel. . Newsletter of the Iowa Archeological Society. 2007, 57 (1).
- Hoganson, John W., North Dakota Geological Survey, and McDonald, H. Gregory. . National Park Service.
- McDonald, H.G., University of Florida, Harington, C.R., University of Alberta, and De Iulii,G. (PDF). Arctic. September 2000, 53 (3): 213–20 [2009-09-25]. (原始内容存档 (PDF)于2020-07-03).
- Cope, ED. (1871) Preliminary report on the vertebrata discovered in the Port Kennedy Bone Cave. American Philosophical Society, 12:73-102.
- Cope, ED. (1893) A preliminary report on the vertebrate paleontology of the Llano Estacado. 4th Annual Report on the Geological Survey of Texas: 136pp.
- Hirschfeld, SE. and SD. Webb (1968) Plio-Pleistocene megalonychid sloths of North America. Bulletin of the Florida State Museum Biological Sciences, 12(5):213-296.
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