袋獅
袋獅(Thylacoleo carnifex)曾經係最大隻嘅食肉有袋動物,但已經絕種。佢哋喺上新世末期至更新世末嘅澳洲生存。模式種叫劊子手袋獅(T. carnifex)。
袋獅
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袋獅嘅想像圖
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物種分類 | ||||||||||||||||
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Thylacoleo carnifex Owen, 1859 |
描述
編輯袋獅嘅近親係食齋嘅袋熊同樹熊。佢係所有現存同已絕種嘅哺乳動物中,咬合力最勁嘅,重100公斤嘅袋獅一咬可以媲美一隻重250公斤嘅獅子[1]。佢會獵食好似雙門齒獸及巨型短面袋鼠等大型動物。佢係有袋類中專門嘅獵食者[2],佢嘅前肢極之強壯,有可收縮嘅爪,呢啲都係有袋類中未有過。佢有鋒利嘅裂齒同強壯嘅顎肌,可以喺獵物度撕開一大片嘅肉。呢啲特徵綜合起來估計佢好似豹咁樣,可能有能力爬樹,同保存獵物嘅腐肉。
袋獅膊頭離地75厘米,長1.5米。佢哋平均重101-130公斤,個別嘅可重達124-160公斤[3]。 體型差唔多同雌獅,老虎咁上下。
化石
編輯袋獅嘅化石喺澳洲多個位點都有發現。2007年,喺納拉伯平原下嘅山窿就發現咗成副袋獅嘅骨同頭骨,估計佢係喺平原罅跌死嘅。[4]另外,亦發現咗一頭幼獅喺其母獅育幼袋中嘅化石。
參考
編輯- ↑ Jonathan Amos (2005-04-05). "Marsupial munch tops big biters" (英文). BBC News. 喺2008-01-25搵到.
- ↑ Bijal P. Trivedi (2004-03-05). "Extinct Australian "Lion" Was Big Biter, Expert Says" (英文). National Geographic Channel. 喺2008-01-25搵到.
- ↑ Wroe, S., Myers, T. J., Wells, R. T., and Gillespie, A. (1999). "Estimating the weight of the Pleistocene marsupial lion, Thylacoleo carnifex (Thylacoleonidae : Marsupialia): implications for the ecomorphology of a marsupial super-predator and hypotheses of impoverishment of Australian marsupial carnivore faunas". Australian Journal of Zoology (英文). 47: 489–498.
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: CS1 maint: multiple names: 作者名單 (link) - ↑ "Caverns give up huge fossil haul" (英文). BBC News. 2007-01-25. 喺2008-01-25搵到.
- Prideaux, G.J. 2007. Megafauna, caves and climate: records from Southern Australia, Selwyn Symposium 2007 GSA Victoria Division, Geological Socitey of Autstralia, Abstracts 79, p. 11-18.
- Prideaux, G.J. 2007. Mid-Pleistocene vertebrate records - Australia. In S.A. Elias (ed.), Encyclopedia of Quaternary Science, pp.1518-1537. Elsevier Science.
- Rich, P.V., van Tets, G.F., Knight, F. (1990) Kadimakara: Extinct Vertebrates of Australia, 2nd Edition, Princeton University Press, Princeton