Cranial and endocranial anatomy of a three‐dimensionally preserved teleosauroid thalattosuchian skull

Cranial and endocranial anatomy of a three‐dimensionally preserved teleosauroid thalattosuchian skull
复制标题

三维保存的远龙科海鳄头骨的颅骨和颅内解剖

DOI:
10.1002/ar.24704
复制
发表时间:
2021
期刊:
The Anatomical Record
影响因子:
--
通讯作者:
Turner, Alan H.
Turner, Alan H.
中科院分区:
--
文献类型:
--
作者:
Wilberg, Eric W.;Beyl, Alexander R.;Pierce, Stephanie E.;Turner, Alan H.

文献摘要

参考文献

被引文献

相似文献

海鳄类是鳄形动物中向海洋领域独立过渡的几种动物之一。它们的水生适应范围从半水生的硬骨龙类,表面上类似现存的gharials,到几乎像鲸目动物的远洋metriorhynchids。了解伴随这一重大转变的一系列骨骼学,生理学和感觉变化已经受到越来越多的关注,但由于缺乏完整的三维保存颅骨而受到一定程度的阻碍。在这里,我们描述了一个保存完好的三维标本Macrospondylus bollensis从英国约克郡的Toarcian颅和颅内解剖。三叉神经窝包含两个大小相似的开口,由一层薄薄的前耳板隔开,这似乎是硬骨龙类的一个子集所特有的结构。大椎龙与其他海鳄类相似,具有锥形半规管,耳蜗管延长,颈动脉管扩大,导致垂体窝扩大,眶动脉扩大,颅内静脉窦扩大,咽鼓窦缩小,和相对直的大脑半球状的大脑扩张。我们首次描述的嗅觉区和鼻旁窦的硬龙。一个相对较大的嗅觉区域表明更大的能力,空气中的嗅觉比在更适应水生metriorhynchoids的真龙类。此外,在嗅觉区的轻微sediment表明存在小盐腺的分泌能力低于那些metriorhynchoid。盐腺在硬骨龙类中的存在证实了以前的假设,即这些腺体起源于Thalattosuchia的共同祖先,促进了它们快速辐射到海洋领域。
Thalattosuchians represent one of the several independent transitions into the marine realm among crocodylomorphs. The extent of their aquatic adaptations ranges from the semiaquatic teleosauroids, superficially resembling extant gharials, to the almost cetacean‐like pelagic metriorhynchids. Understanding the suite of osteological, physiological, and sensory changes that accompanied this major transition has received increased attention, but is somewhat hindered by a dearth of complete three‐dimensionally preserved crania. Here, we describe the cranial and endocranial anatomy of a well‐preserved three‐dimensional specimen ofMacrospondylus bollensisfrom the Toarcian of Yorkshire, UK. The trigeminal fossa contains two similar‐sized openings separated by a thin lamina of prootic, a configuration that appears unique to a subset of teleosauroids.Macrospondylus bollensisresembles other thalattosuchians in having pyramidal semicircular canals with elongate cochlear ducts, enlarged carotid canals leading to an enlarged pituitary fossa, enlarged orbital arteries, enlarged endocranial venous sinuses, reduced pharyngotympanic sinuses, and a relatively straight brain with a hemispherical cerebral expansion. We describe for the first time the olfactory region and paranasal sinuses of a teleosauroid. A relatively large olfactory region suggests greater capacity for airborne olfaction in teleosauroids than in the more aquatically adapted metriorhynchoids. Additionally, slight swellings in the olfactory region suggest the presence of small salt glands of lower secretory capacity than those of metriorhynchoids. The presence of osteological correlates for salt glands in a teleosauroid corroborates previous hypotheses that these glands originated in the common ancestor of Thalattosuchia, facilitating their rapid radiation into the marine realm.
德语和英语奥伯伦·利亚斯鳄鱼
DOI: --
发表时间: 1962
期刊:
影响因子: --
作者:
F. Westphal
通讯作者: F. Westphal
海鳄类鳄鱼形态的形态空间占据:头骨形状变化、物种划分和时间模式
DOI: 10.1111/j.1475-4983.2009.00904.x
发表时间: 2009
期刊: Palaeontology
影响因子: 2.6
作者:
S. Pierce;K. Angielczyk;E. Rayfield
通讯作者: E. Rayfield
尖鳄霍顿 (Sphenosuchus acutus Haughton) 的修订版,一种来自南非埃利奥特组(晚三叠世或早侏罗世)的鳄形爬行动物
DOI: 10.1098/rstb.1990.0185
发表时间: 1990
期刊: Philosophical Transactions of the Royal Society B
影响因子: --
作者:
A. D. Walker
通讯作者: A. D. Walker
阿劳卡南十字龙的口鼻部:后喉科动物鼻部区域的新解剖学案例研究
DOI: 10.1111/let.12011
发表时间: 2013
期刊: Lethaia
影响因子: 1.5
作者:
Yanina Herrera;M. Fernández;Z. Gasparini
通讯作者: Z. Gasparini
Morfología del miembro anterior de Geosaurus araucanensis Gasparini y Dellapé, 1976(鳄鱼目:Thalattosuchia)
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
Yanina Herrera;Marta S. Fernández;J. Varela
通讯作者: J. Varela