萨奇卡龙 (学名 :Sachicasaurus )是上龙科 短颈龙亚科 已灭绝 的一个属 ,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 的帕哈组 。模式种 是生命萨奇卡龙 (S. vitae )。
词源
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
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
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] 和蒙基拉龙 。[ 6] 萨奇卡龙还与薄板龙科的卡拉瓦亚龙 和莱瓦泳龙 、[ 7] 海龟类的帕迪亚链龟 、[ 8] 桑当龟科的莱瓦龟 [ 9] 及大眼鱼龙科的穆伊斯卡鱼龙 和锋齿鱼龙 同期共存。[ 10] [ 11]
参考资料
^ 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 [2024-08-22 ] . S2CID 135054193 . doi:10.15446/esrj.v22n4.69916 . (原始内容存档 于2023-04-07).
^ Zhao, R.J. Body reconstruction and size estimation of plesiosaurs. 2024. bioRxiv 10.1101/2024.02.15.578844 .
^ 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 .
^ 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 .
^ 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 . (原始内容存档 于2017-08-06).
^ 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 .
^ 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 .
^ 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 . (原始内容存档 于2017-02-12).
^ Cadena, Edwin. The first South American sandownid turtle from the Lower Cretaceous of Colombia . PeerJ. 2015b, 3 : e1431. PMC 4690369 . PMID 26713227 . doi:10.7717/peerj.1431 .
^ 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 . (原始内容存档 于2017-04-21).
^ 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 .
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