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萨奇卡龙属

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萨奇卡龙属
化石时期:巴列姆阶
~130–120 Ma
萨奇卡龙正模标本
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: 萨奇卡龙属 Sachicasaurus
Páramo Fonseca英语María Páramo et al., 2018
模式種
生命萨奇卡龙
Sachicasaurus vitae

Páramo Fonseca et al., 2018

萨奇卡龙学名Sachicasaurus)是上龙科短颈龙亚科英语Brachaucheninae灭绝的一个,化石发现于安第斯哥伦比亚东部山脉昆迪博亚卡高原巴列姆阶帕哈组英语Paja Formation模式种生命萨奇卡龙S. vitae)。

词源

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属名Sachicasaurus取自化石发现地萨奇卡,而saurus在拉丁化希腊语中意为“蜥蜴”。种加词vitae在拉丁语中意为“生命”,之所以选择此名,是因为发现的化石激发了萨奇卡的生命。[1]

描述

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体型比较

萨奇卡龙是种大型上龙类,正模标本长约10米(33英尺)、重约17公噸(19短噸)。[1][2]正模标本MP111209-1于2013年发现,由一个接近完整的颅骨,及包括一条完整后肢与各类椎骨在内的颅后材料组成。鉴别特征包括下颌骨联合很短、下颌齿数目减少(17至18颗,而其它上龙为25至40颗)、牙齿细长及其它特征。标本保存下来的部分为9.9米(32英尺)长(可能缺少尾部末端的椎骨),被解释为一具亚成体。[1]它是最大最完整的上龙科标本之一。[3]

古环境

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萨奇卡龙是帕哈组发现的四种上龙科之一,另外三种是阿科斯达龙[4]窄鼻龙[5]蒙基拉龙英语Monquirasaurus[6]萨奇卡龙还与薄板龙科的卡拉瓦亚龙莱瓦泳龙[7]海龟类的帕迪亚链龟英语Desmatochelys[8]桑当龟科的莱瓦龟英语Leyvachelys[9]及大眼鱼龙科的穆伊斯卡鱼龙英语Muiscasaurus锋齿鱼龙英语Kyhytysuka同期共存。[10][11]

参考资料

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  1. ^ 1.0 1.1 1.2 Páramo Fonseca, María Eurídice; Benavides Cabra, Cristian David; Gutiérrez, Ingry Esmirna. A new large pliosaurid from the Barremian (Lower Cretaceous) of Sáchica, Boyacá, Colombia. Earth Sciences Research Journal. 2018, 22 (4): 223–238. S2CID 135054193. doi:10.15446/esrj.v22n4.69916可免费查阅. 
  2. ^ Zhao, R.J. Body reconstruction and size estimation of plesiosaurs. 2024. bioRxiv 10.1101/2024.02.15.578844可免费查阅. 
  3. ^ Zverkov, E. M.; Pervushov. A gigantic pliosaurid from the Cenomanian (Upper Cretaceous) of the Volga Region, Russia. Cretaceous Research. 2020, 110. Bibcode:2020CrRes.11004419Z. doi:10.1016/j.cretres.2020.104419. 
  4. ^ Gómez Pérez, Marcela; Noè, Leslie F. Cranial anatomy of a new pliosaurid Acostasaurus pavachoquensis from the Lower Cretaceous of Colombia, South America. Palaeontographica Abteilung A. 2017, 310 (1–2): 5–42 [2019-03-09]. Bibcode:2017PalAA.310....5G. doi:10.1127/pala/2017/0068. 
  5. ^ Páramo, 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 Villa de Leiva, Colombia, South America. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales. 2016, 40 (154): 84–103 [2017-04-20]. doi:10.18257/raccefyn.239可免费查阅. 
  6. ^ Noè, L.F.; Gómez-Pérez, M. Giant pliosaurids (Sauropterygia; Plesiosauria) from the Lower Cretaceous peri-Gondwanan seas of Colombia and Australia. Cretaceous Research. 2021, 132: 105122. doi:10.1016/j.cretres.2021.105122. 
  7. ^ Páramo Fonseca, María Euridice; O'Gorman, José Patricio; Gasparini, Zulma; Padilla, Santiago; Parra Ruge, Mary Luz. A new late Aptian elasmosaurid from the Paja Formation, Villa de Leiva, Colombia. Cretaceous Research. 2019, 99: 30–40 [2019-03-09]. Bibcode:2019CrRes..99...30P. doi:10.1016/j.cretres.2019.02.010. hdl:11336/127809可免费查阅. 
  8. ^ Cadena, Edwin A.; Parham, James F. Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia. PaleoBios. 2015a, 32: 1–42 [2017-03-30]. doi:10.5070/P9321028615. 
  9. ^ Cadena, Edwin. The first South American sandownid turtle from the Lower Cretaceous of Colombia. PeerJ. 2015b, 3: e1431. PMC 4690369可免费查阅. PMID 26713227. doi:10.7717/peerj.1431可免费查阅. 
  10. ^ Maxwell, Erin E.; Dick, Daniel; Padilla, Santiago; Parra, Mary Luz. A new ophthalmosaurid ichthyosaur from the Early Cretaceous of Colombia. Papers in Palaeontology. 2015, 2: 59–70 [2017-03-30]. doi:10.1002/spp2.1030. 
  11. ^ Cortés, D.; Maxwell, E.E.; Larsson, H.C.E. Re-appearance of hypercarnivore ichthyosaurs in the Cretaceous with differentiated dentition: revision of Platypterygius sachicarum (Reptilia:Ichthyosauria, Ophthalmosauridae) from Colombia. Journal of Systematic Palaeontology. 2021, 19 (14): 969–1002. Bibcode:2021JSPal..19..969C. S2CID 244512087. doi:10.1080/14772019.2021.1989507. 

外部链接

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