当前位置: X-MOL 学术J. Paleontol › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A new early-diverging sphenodontian (Lepidosauria, Rhynchocephalia) from the Upper Triassic of Virginia, U.S.A.
Journal of Paleontology ( IF 1.3 ) Pub Date : 2020-11-10 , DOI: 10.1017/jpa.2020.87
Hans-Dieter Sues , Rainer R. Schoch

A new taxon of sphenodontian reptile, Micromenodon pitti new genus new species is described from the Upper Triassic (Carnian) Vinita Formation of the Richmond basin of the Newark Supergroup in Virginia. It is diagnosed by a dorsoventrally deep facial process of the maxilla that extends for almost the entire anteroposterior length of the bone and by obtusely conical, strongly ribbed additional teeth in the maxilla that comprise a greatly enlarged tooth followed by smaller teeth posteriorly. Phylogenetic analysis found Micromenodon pitti n. gen. n. sp. as an early-diverging sphenodontian with fully acrodont tooth implantation. The maxillary dentition appears functionally suited for processing hard arthropod exoskeletons and snail shells.UUID: http://zoobank.org/40ed7cb6-4867-464b-8bfb-db07febfe97c

中文翻译:

来自美国弗吉尼亚州上三叠统的一种新的早期分化的蝶龙目(鳞龙目,Rhynchocephalia)

一种新的蝶类爬行动物,小齿鳖新属新种描述于弗吉尼亚州纽瓦克超群里士满盆地的上三叠统(卡尼期)Vinita 组。它是通过上颌骨的背腹面深部突起来诊断的,该突起几乎延伸到骨骼的整个前后长度,并且通过上颌骨中钝圆锥形、强肋骨的附加牙齿,包括一个大大增大的牙齿,然后是后面的较小的牙齿。发现系统发育分析小齿鳖n. 将军 n. sp。作为一个早期发散的蝶齿动物,具有完全的尖齿植入物。上颌牙列在功能上似乎适合加工坚硬的节肢动物外骨骼和蜗牛壳。UUID:http://zoobank.org/40ed7cb6-4867-464b-8bfb-db07febfe97c
更新日期:2020-11-10
down
wechat
bug