User:Lureplant/沙盒
刀齒龍屬 | |
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| 復原圖 | |
科学分类 
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| 界： | 动物界 Animalia |
| 门： | 脊索动物门 Chordata |
| 纲： | 爬行綱 Reptilia |
| 目： | 有鳞目 Squamata |
| 总科： | †滄龍總科 Mosasauroidea |
| 科： | †滄龍科 Mosasauridae |
| 亚科： | †沧龙亚科 Mosasaurinae |
| 属： | †刀齒龍屬 Kourisodon Nicholls and Meckert, 2002 |
| 種 | |
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龐特利奇刀齒龍 K. puntledgensis Nicholls and Meckert, 2002 (模式種) | |
刀齒龍屬（學名：Kourisodon） (from the Greek κουρίς kourís + ὀδών odon, "razor tooth")是已滅絕滄龍科下的一屬，化石出土於加拿大英屬哥倫比亞的溫哥華島[1]，以及日本的和泉層群]][2]；生存年代為白堊紀晚期的晚桑托期至晚馬斯垂克期。刀齒龍屬最初被認為屬於平齒龍族（"Leiodontini"，已失效）[1]硬椎龍屬 more recently as a "Clidastine".[3]
Distribution[编辑]
Kourisodon puntledgensis is known from a single locality located in the Santonian Pender Formation along the banks of the 龐特利奇河Puntledge River (after which it was named). K. puntledgensis was a small mosasaur, with an estimated length of about 3.75 meters (around 12.3 feet). It shared its environment with a variety of Elasmosaurids, turtles, and other mosasaurs, although it seems that no polycotylids were present in its Pacific environment.[1]
In 2005, a fragmentary skeleton from exposures of the Izumi Group on Shikoku Island, Japan, was assigned to Kourisodon sp. This specimen demonstrated longer maxillary teeth among other differences from K. puntledgensis, which the authors interpreted to mean that this individual belonged to a second species, although this new species has not yet been formally named. Other fragmentary remains from the Izumi Group have been tentatively assigned to K. sp., some of which represent juvenile animals.[2]
A 12' 3" complete replica of the Puntledge River specimen is on display at the Canadian Fossil Discovery Centre in Morden, Manitoba.[4][5][6]
References[编辑]
- ^ 1.0 1.1 1.2 Nicholls, E. L. and Meckert, D. (2002). Marine reptiles from the Nanaimo Group (Upper Cretaceous) of Vancouver Island. Canadian Journal of Earth Science 39(11):1591-1603.
- ^ 2.0 2.1 Tanimoto, M. Mosasaur remains from the Upper Cretaceous Izumi Group of Southwest Japan.. Netherlands Journal of Geosciences. 2005, 84 (3): 373–378. doi:10.1017/s0016774600021156
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- ^ Caldwell, Michael; Konishi, Takuya. Taxonomic re-assignment of the first-known mosasaur specimen from Japan, and a discussion of circum-pacific mosasaur paleobiogeography. Journal of Vertebrate Paleontology. 2007, 27 (2): 517–520. doi:10.1671/0272-4634(2007)27[517:trotfm]2.0.co;2.
- ^ 'Ferocious' new mosasaur skeleton coming to Morden | CBC News. CBC. [2018-07-16] （美国英语）.
- ^ 'Ferocious, razor-like teeth': new mosasaur comes to Morden's fossil centre. CJOB. [2018-07-16] （英语）.
- ^ Morden museum's collection of mosasaur skeletons grows with new addition. Winnipeg. 2018-07-13 [2018-07-16] （加拿大英语）.
External links[编辑]
- Kourisodon in the Paleobiology Database
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