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窄鼻龙属

窄鼻龙属
化石时期:巴列姆阶晚期
~126 Ma
2004或05年间处于原位的穆氏窄鼻龙正模标本
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行綱 Reptilia
目: 蛇頸龍目 Plesiosauria
科: 上龍科 Pliosauridae
演化支 海猎龙类 Thalassophonea
亚科: 短颈龙亚科 Brachaucheninae
属: 窄鼻龙属 Stenorhynchosaurus
Páramo-Fonseca英语María Páramo et al., 2016
模式種
穆氏窄鼻龙
Stenorhynchosaurus munozi

Páramo-Fonseca英语María Páramo et al., 2016
異名
  • 短颈龙未定种 Brachauchenius sp. Hampe, 2005

窄鼻龙学名Stenorhynchosaurus)是蛇颈龙目上龙科已灭绝的一个,生存于早白垩世南美洲模式种兼唯一种是穆氏窄鼻龙Stenorhynchosaurus munozi)。[1]

词源

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属名取自希腊语词汇stenos(狭窄的)、rhynchos(鼻部)及sauros(蜥蜴),种名munozi表彰发现并报告化石的豪赫·穆尼奥兹(Jorge Muñoz)。[1]

发现与命名

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穆氏窄鼻龙正模标本中的颅骨

2000年,在豪赫·穆尼奥兹位于哥伦比亚博亚卡省莱瓦镇附近卡布雷拉的地产上发现一截蛇颈龙类吻突前部,其出土于白垩纪巴列姆阶的海相岩层中。穆尼奥兹向地方当局报告了该发现,后者又向波哥大哥伦比亚地质调查局英语Colombian Geological Survey管理的何塞·罗约与戈梅斯地质博物馆(Museo Geológico José Royo y Gómez)工作人员发出通知。随后在哥伦比亚地理生物基金会(Fundación Colombiana de Geobiología)的合作下,于2004至05年间挖出近乎完整的骨骼,再将遗骸运至波哥大,并指定编号VL17052004-1以便进行清修和研究。[1]

遗骸整体关节连接,发现于帕哈组英语Paja Formation杂色黏土岩段(Arcillolitas Abigarradas Member)的C层(Segment C),该层含有与潮间带海洋环境相符的高岭粘土岩,岩石基质中含数件菊石标本或印痕,颅骨内侧也有一件。这些菊石包括盔形格氏菊石(Gerhardtia galeatoides)、普罗旺斯格氏菊石(G. provincialis)等物种及海因茨菊石属英语Heinzia,在巴列姆阶较为典型。2005年,德国古生物学家奥利弗·汉普(Oliver Hampe)对标本进行初步描述并归入短颈龙未定种,即该属的一个分类不明物种,而此前短颈龙仅在美国晚白垩世沉积物中发现。它是贝里亚阶豪特里维阶间的空缺之后首次出现的非彪龙科上龙类。[2]2016年,玛丽亚·帕拉默英语María Páramo、马塞拉·戈梅斯-佩雷斯(Marcela Gómez-Pérez)、费尔南多·埃塔约英语Fernando Etayo和莱斯列·诺伊(Leslie Noé)发表了更完整的描述,并将VL17052004-1选为新属新种穆氏窄鼻龙(Stenorhynchosaurus munozi)的正模标本[1]

描述

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窄鼻龙是种中型上龙科,成年后长达7米(23英尺)。[3]

参考资料

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  1. ^ 1.0 1.1 1.2 1.3 Páramo-Fonseca, María E.; Gómez-Pérez, Marcela; Noé, Leslie F.; Etayo, Fernando. Stenorhynchosaurus munozi, gen. et sp. nov. a new pliosaurid from the Upper Barremian (Lower Cretaceous) of Sutamarchán Colombia, South America. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales. 2016-04-06, 40 (154): 84–103. ISSN 2382-4980. doi:10.18257/raccefyn.239可免费查阅 (英语). 
  2. ^ O. Hampe. Considerations on a Brachauchenius skeleton (Pliosauroidea) from the lower Paja Formation (late Barremian) of Villa de Leyva area (Colombia). Fossil Record. 2005, 8 (1): 37-51. Bibcode:2005FossR...8...37H. doi:10.5194/fr-8-37-2005可免费查阅. 
  3. ^ Páramo-Fonseca, M.E.; Benavides-Cabra, C.D.; Gutiérrez, I.E. A new specimen of Stenorhynchosaurus munozi Páramo-Fonseca et al., 2016 (Plesiosauria, Pliosauridae), from the Barremian of Colombia: new morphological features and ontogenetic implications. Journal of Vertebrate Paleontology. 2019, 39 (4). e1663426. Bibcode:2019JVPal..39E3426P. S2CID 208561823. doi:10.1080/02724634.2019.1663426. 
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窄鼻龙属
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