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鸦鲨属

鸦鲨属
化石时期:晚白垩世
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 软骨鱼纲 Chondrichthyes
亚类: 鲨总目 Selachimorpha
目: 鼠鲨目 Lamniformes
科: 反鸦鲨科 Anacoracidae
属: 鸦鲨属 Squalicorax

鸦鲨属学名Squalicorax),又称角鳞鲨属,是一灭绝鼠鲨目鲨鱼,生存于白垩纪晚期。

命名

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鸦鲨的学名 Squalicorax 来自于拉丁语squalus(意思为“鲨鱼”)与希腊语的 κόραξ "korax" (意思为“渡鸦”)组合而成。

分布

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西部内陆海道中,一只白垩尖吻鲨与两只角鳞鲨属环绕着一个破碎龙的尸体。
鸦鲨的化石,发现于美国肯萨斯州,保存于美国华盛顿史密森尼学会

美国肯萨斯州发现了一条全长1.9米及完整的鸦鲨属化石,证明了牠们分布在西部内陆海道。在欧洲北非北美洲其他地方也有发现大量属于牠们的牙齿。若以已知最大的牙齿来估计,牠们可以长达5米。

食性

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鸦鲨属是掠食者,但从一些鸭嘴龙科跖骨上也有发现牠们的牙齿,所以估计牠们也是食腐动物[1]。因此,牠们又名乌鸦鲨鱼。牠们也会吃沧龙科、乞丐鱼属及其他硬骨鱼和海洋生物。在无齿翼龙的骨头上曾发现有角鳞鲨的齿痕,但是是跃出水面捕捉、趁翼龙潜入水中的时候突袭,或仅是啃食尸体仍无法确认[2]

物种

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摩洛哥发现的S. pristodontis牙齿
  • Squalicorax acutus Siversson et al., 2018
  • Squalicorax africanus Cappetta, 1991
  • Squalicorax appendiculatus Agassiz in Geinitz, 1839
  • Squalicorax baharijensis Stromer, 1927
  • Squalicorax bassanii Gemmellaro, 1920
  • Squalicorax bazzii Siversson et al., 2018
  • Squalicorax bernardezi Guinot, Uunderwood, Cappetta & Ward, 2013
  • Squalicorax coquandi Vullo, Cappetta & Neraudeau, 2007
  • Squalicorax curvatus Williston, 1900
  • Squalicorax falcatus Agassiz, 1843
  • Squalicorax heterodon Reuss, 1845
  • Squalicorax kaupi Agassiz, 1843
  • Squalicorax kugleri Leriche, 1938
  • Squalicorax lalunaensis Guinot & Carrillo-Briceño, 2018
  • Squalicorax lindstromi Davis, 1890
  • Squalicorax moodyi Guinot & Carrillo-Briceño, 2018
  • Squalicorax mutabilis Siversson et al., 2018
  • Squalicorax primigenius Landemaine, 1991
  • Squalicorax priscoserratus Siverson, Lindgren & Kelley, 2007
  • Squalicorax pristodontus Agassiz, 1843
  • Squalicorax sagisicus Glikman, 1980
  • Squalicorax volgensis Glikman, 1971
  • Squalicorax yangaensis Dartevelle & Casier, 1943

参考

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  1. ^ David R. Schwimmer, J. D. Stewart and G. Dent Williams. Scavenging by Sharks of the Genus Squalicorax in the Late Cretaceous of North America. PALAIOS Vol. 12, No. 1 (Feb., 1997), pp. 71-83
  2. ^ 存档副本. [2018-12-27]. (原始内容存档于2021-01-22). 
  • H. Cappetta, Handbook of Paleoichthyology (Gustav Fischer, 1987)

外部链接

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鸦鲨属
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