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窃螺龙属

窃螺龙属
化石时期:上白垩纪70–66 Ma
窃螺龙全身骨架
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龙总目 Dinosauria
目: 蜥臀目 Saurischia
亚目: 兽脚亚目 Theropoda
科: 偷蛋龙科 Oviraptoridae
亚科: 河源龙亚科 Heyunanniinae
属: 窃螺龙属 Conchoraptor
Barsbold, 1986
模式种
纤弱窃螺龙
Conchoraptor gracilis

Barsbold, 1986

窃螺龙属学名Conchoraptor)是偷蛋龙科的一恐龙,生存于上白垩纪亚洲。牠们的属名意为“海螺偷窃者”,反映了窃蛋龙科并非以蛋为食,而有可能是专门吃软体动物的假说[1]

叙述

窃螺龙的头颅骨(亚伯达大学藏)

窃螺龙是种小型恐龙,身长约1到2米[1]。不像其他偷蛋龙科,窃螺龙没有头冠。但窃螺龙缺乏牙齿,这是典型的偷蛋龙类特征[1]。偷蛋龙类虽然没有牙齿,但具有坚硬的喙状嘴,被认为适合咬碎软体动物的外壳[1]。窃螺龙的头颅骨有许多洞孔、中空空间[2]。耳部区域的骨头连接处,被认为是共鸣腔,可协助听觉[3]

发现与命名

在1971年,一群波兰蒙古的联合挖掘团队在蒙古的耐梅盖特组(Nemegt Formation)发现这些化石,地质年代为坎潘阶晚期[1]。最初科学家认为窃螺龙是偷蛋龙的幼年个体,因此缺乏头冠,而在性成熟的过程中,会长出头冠[1]。但更多的研究显示窃螺龙与偷蛋龙的手部结构不同,所以认为是一个独立的属[1]。在解剖学上,窃螺龙的演化位置似乎是介于雌驼龙及偷蛋龙之间,这使得学界更难研究窃螺龙的分类位置[1]

模式种纤弱窃螺龙C. gracilis),是由瑞钦·巴思钵(Rinchen Barsbold)在1986年所描述、命名[1]。属名在古希腊文意为“贝壳的盗贼”[4],因为瑞钦·巴思钵认为偷蛋龙类是以软体动物为食,而非传统理论所认为的以蛋为食[1];种名在拉丁文意为“纤细的”。正模标本(编号IGM 100/20)是一个部分身体骨骼、头颅骨。之后发现约20个标本,被编入于窃螺龙。

在1986年,瑞钦·巴思钵将窃螺龙归类于偷蛋龙科。近年研究显示牠们属于偷蛋龙科的雌驼龙亚科

参考文献

  1. ^ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Conchoraptor." In: Dodson, Peter & Britt, Brooks & Carpenter, Kenneth & Forster, Catherine A. & Gillette, David D. & Norell, Mark A. & Olshevsky, George & Parrish, J. Michael & Weishampel, David B. The Age of Dinosaurs. Publications International, LTD. p. 136. ISBN 0-7853-0443-6.
  2. ^ Kundrat, M. 2007, "Avian-like attributes of a virtual brain model of the oviraptorid theropod Conchoraptor gracilis", Naturwissenschaften 94: 499-504
  3. ^ Kundrat M. and Janacek, J., 2007, "Cranial pneumatization and auditory perceptions of the oviraptorid dinosaur Conchoraptor gracilis (Theropoda, Maniraptora) from the Late Cretaceous of Mongolia", Naturwissenschaften 94:769–778
  4. ^ Rinchen Barsbold, 1986, "Raubdinosaurier Oviraptoren". In: Vorobyeva, E. I. (ed.), Herpetologische Untersuchungen in der Mongolischen Volksrepublik. Akademia Nauk SSSR. pp. 210-223
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窃螺龙属
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