Mélani Berrocal-Casero, R. Pimentel, P. Callapez, F. Barroso-Barcenilla, Senay Ozkaya de Juanas
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引用次数: 0
摘要
卡伦顿龙(Carentonosaurus soaresi)最近在葡萄牙西部科英布拉卡塞雷斯多斯卡雷科斯(Casais dos Carecos)的仙人掌纪(上白垩世)中上段被描述,其依据是一组不同的侏罗纪蜥蜴新材料(颈椎和背椎)。在用于诊断该物种的椎骨上观察到的主要形态特征是:存在明显的外侧孔和亚中心孔、高度向侧面突出的副椎骨超出了前椎骨、低矮的近直角神经脊柱上饰有纵沟、背椎骨沿腹面显示出一条矢状沟。本文还描述了在新材料和以前研究过的脊椎骨中观察到的其他诊断细节,如颧骨和颧弓存在龙骨。在soaresi种中出现的这些和其他重要的形态特征,在基因型Carentonosaurus mineaui和其他已知的有鳞类动物中是不存在的,因此可以定义新的Segurasaurus属。
On Segurasaurus (Squamata: Pythonomorpha), a New Genus of Lizard from the Cenomanian (Upper Cretaceous) of Portugal
Carentonosaurus soaresi was recently described in the uppermost middle Cenomanian (Upper Cretaceous) of Casais dos Carecos (Coimbra, western Portugal) based on a diverse set of new material (cervical and dorsal vertebrae) of the Pythonomorpha lizard. The main morphological characteristics observed in the vertebrae used for the diagnosis of this species are the presence of distinct lateral and subcentral foramina, highly laterally projected paradiapophyses beyond the prezygapophyses, a low subrectangular neural spine ornamented with longitudinal grooves, and dorsal vertebrae displaying a sagittal furrow along the ventral surface. Additional diagnostic details observed both in new material and the previously studied vertebrae are described herein, such as the presence of keels in the zygantrum and zygosphene. These and other important morphological characteristics present in the species soaresi are absent in the genotype Carentonosaurus mineaui and in other known Squamata, allowing for the definition of the new genus Segurasaurus.