Journal of Vertebrate Paleontology ( IF 1.4 ) Pub Date : 2021-03-05 , DOI: 10.1080/02724634.2021.1879102 Hans-Dieter Sues 1 , Ben T. Kligman 2
ABSTRACT
We describe a new taxon of lepidosauromorph reptile, Vinitasaura lizae, based on a nearly complete dentary and the posterior portion of a second dentary from the Upper Triassic (upper Carnian) Vinita Formation in east-central Virginia. It offers new insights into the morphological diversification and spatiotemporal distribution of lepidosauromorphs during the Triassic. The lepidosauromorph assemblage from the Vinita Formation include at least two other taxa and reveals connections to others in Europe and North America. It currently provides the best record of the early diversification of these reptiles in equatorial Pangaea, highlighting the potential importance of similar assemblages from still poorly sampled regions such as western North America for addressing questions concerning the origin and evolutionary history of this major diapsid clade during the Triassic.
中文翻译:
来自弗吉尼亚州上三叠纪(卡尼安州)的一种新的蜥蜴状爬行动物和鳞翅目蜥蜴的三叠纪记录(蜥蜴科Diapsida)
摘要
我们描述了一种新的类鳞翅类爬行动物,Vinitasaura lizae,基于几乎完整的牙齿和位于弗吉尼亚州中东部的上三叠纪(上卡尼期)Vinita组中第二个牙齿的后部。它为三叠纪期间鳞翅类神经形态的形态多样性和时空分布提供了新的见解。Vinita地层的鳞翅类昆虫组合包括至少两个其他类群,并揭示了与欧洲和北美其他类群的联系。目前,它提供了这些爬行动物在赤道Pangaea早期多样化的最佳记录,突显了来自采样率仍然很差的地区(如北美西部)的类似组合对于解决有关该主要双足进化枝在进化过程中的起源和进化史的潜在重要性。三叠纪。