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桑塔納盜龍屬

桑塔纳盗龙属
化石时期:阿普第阶阿尔布阶112 Ma
骨骼重建
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: 恐龍總目 Dinosauria
目: 蜥臀目 Saurischia
亚目: 獸腳亞目 Theropoda
演化支 新獸腳類 Neotheropoda
演化支 鳥吻類 Averostra
演化支 坚尾龙类 Tetanurae
演化支 俄里翁龍類 Orionides
演化支 鳥獸腳類 Avetheropoda
演化支 虛骨龍類 Coelurosauria
演化支 暴盜龍類 Tyrannoraptora
总科: 暴龍總科 Tyrannosauroidea
演化支 泛暴龍類 Pantyrannosauria
属: 桑塔纳盗龙属 Santanaraptor
Kellner, 1999
模式種
普莱西多桑塔纳盗龙
Santanaraptor placidus

Kellner, 1999

桑塔纳盗龙属名Santanaraptor,意为“桑塔纳组英语Santana Formation的盗贼”)是兽脚类恐龙的一个,生存于大约1.12亿年前早白垩世阿普第阶晚期至阿尔布阶早期)的南美洲

分类

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正模标本MN 4802-V)是部分幼龙骨骼,由三节带着人字骨的颈椎、坐骨、股骨、胫骨、腓骨、脚部及软组织组成。化石化组织包括一层很薄的表皮[1]肌肉纤维及疑似的血管[2]标本在1996年发现于巴西东北塞阿拉州罗穆阿尔多组英语Romualdo Formation(桑塔纳群)。[3]虽然主要所知于躯干后段材料,但该化石代表的个体可能已经长到1.25米(4.1英尺)长。化石骨盆后肢部骨骼组成,这些仅对其整体外观提供少量信息。然而它肯定是种虚骨龙类,一些特征显示它可能是暴龙超科成员。从长臂、三指手部及纤细后肢推测其与帝龙冠龙相似。[3]

体型比较

模式种普莱西多桑塔纳盗龙(S. placidus)由亚历山大·克尔纳英语Alexander Kellner在1999年首次描述。种名致敬卡里里大学古生物博物馆葡萄牙語Museu de Paleontologia da Universidade Regional do Cariri创始人普莱西多·西达德·努文斯葡萄牙語Placido Cidade Nuvens[4]

本属刚发现时被视为手盗龙类兽脚类,但现在根据股骨特征而视为基干虚骨龙类。霍兹(2004年)将桑塔纳盗龙列为冈瓦纳古陆上发现的首个暴龙超科[5]德考特和格瑞洛(2018年)亦作出同样发现。[6]然而该观点现已受到批评,因为这种被误认的暴龙超科特征亦广泛见于虚骨龙类,而脚部的几个方面更近似西北阿根廷龙科[7]

参见

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参考资料

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  1. ^ Hendrickx, Christophe; Bell, Phil R.; Pittman, Michael; Milner, Andrew R. C.; Cuesta, Elena; O'Connor, Jingmai; Loewen, Mark; Currie, Philip J.; Mateus, Octávio; Kaye, Thomas G.; Delcourt, Rafael. Morphology and distribution of scales, dermal ossifications, and other non-feather integumentary structures in non-avialan theropod dinosaurs. Biological Reviews. 2022, 97 (3): 960–1004 [2022-06-22]. ISSN 1469-185X. PMID 34991180. S2CID 245820672. doi:10.1111/brv.12829. (原始内容存档于2022-01-08) (英语). 
  2. ^ Kellner, A. W. A. Fossilized theropod soft tissue. Nature. 1996, 379 (32). doi:10.1038/379032a0. 
  3. ^ 3.0 3.1 Benton, Michael J. Prehistoric Life. Edinburgh, Scotland: Dorling Kindersley. 2012: 321. ISBN 978-0-7566-9910-9. 
  4. ^ Kellner, A. W. A. Short Note on a new dinosaur (Theropoda, Coelurosauria) from the Santana Formation (Romualdo Member, Albian), northeastern Brazil. Boletim do Museu Nacional (Serie Geologia). 1999, 49: 1–8. 
  5. ^ Holtz, Thomas R. Jr. Tyrannosauroidea. The Dinosauria Second. University of California Press. 2004. 
  6. ^ Delcourt, Rafael; Grillo, Orlando Nelson. Tyrannosauroids from the Southern Hemisphere: Implications for biogeography, evolution, and taxonomy. Palaeogeography, Palaeoclimatology, Palaeoecology. 2018, 511: 379–387. Bibcode:2018PPP...511..379D. S2CID 133830150. doi:10.1016/j.palaeo.2018.09.003. 
  7. ^ Doran Brownstein, Chase. Dinosaurs from the Santonian–Campanian Atlantic coastline substantiate phylogenetic signatures of vicariance in Cretaceous North America. Royal Society Open Science. 2021, 8 (8): 210127. Bibcode:2021RSOS....810127D. PMC 8385347可免费查阅. PMID 34457333. doi:10.1098/rsos.210127. 

外部链接

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桑塔納盜龍屬
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