A Description of the Skull of Eubaena cephalica (Hay, 1904) and New Insights into the Cranial Circulation and Innervation of Baenid Turtles
A Description of the Skull of Eubaena cephalica (Hay, 1904) and New Insights into the Cranial Circulation and Innervation of Baenid Turtles
复制标题
对 Eubaena cephalica 头骨的描述（Hay，1904）以及对贝尼龟颅骨循环和神经支配的新见解
DOI：
10.1080/02724634.2018.1474886
复制
发表时间：
2018
影响因子：
1.4
通讯作者：
W. Joyce
中科院分区：
文献类型：
--
作者：
Y. Rollot;T. Lyson;W. Joyce
摘要
颈内动脉系统在化石龟类（包括斑龟类）的系统分类中扮演了重要的角色。一个新的，几乎保存完好的标本Eubaena cephalica提供了一个机会，探索第一次使用CT（计算机断层扫描）扫描的颅循环和神经支配的这一类群。我们在这里的文件，头骨拥有一个发达的，分支管vidianus神经，但缺乏一个管caroticus腭，这与以前报道的循环和神经支配模式的E。特别是头足目和一般的旁隐足目。未来的研究使用CT扫描技术将能够澄清，如果模式报告这里是唯一的E。头状或通常代表旁隐足动物。后一个结论可能会对化石龟的系统学产生相当大的影响。
ABSTRACT
The internal carotid system has played an important role in the systematics of fossil turtles, including baenids. A new, almost perfectly preserved specimen of Eubaena cephalica provides an opportunity to explore for the first time the cranial circulation and innervation of this taxon using CT (computed tomography) scans. We here document that the skull possesses a well-developed, branching canalis nervus vidianus but lacks a canalis caroticus palatinum, which contradicts the previously reported circulation and innervation pattern for E. cephalica specifically and that of paracryptodires in general. Future investigation using CT scanning technology will be able to clarify if the pattern reported herein is unique to E. cephalica or is representative of paracryptodires in general. The latter conclusion will likely have considerable implications for the systematics of fossil turtles.