The discrepancy between morphological and microanatomical patterns of anamniotic stegocephalian postcrania from the Early Permian Briar Creek Bonebed (Texas)
The discrepancy between morphological and microanatomical patterns of anamniotic stegocephalian postcrania from the Early Permian Briar Creek Bonebed (Texas)
复制标题
DOI：
10.1016/j.crpv.2015.06.005
复制
发表时间：
2016
影响因子：
1.1
通讯作者：
D. Konietzko-Meier;Christen D. Shelton;Christen D. Shelton;P. Sander
中科院分区：
文献类型：
--
作者：
D. Konietzko-Meier;Christen D. Shelton;Christen D. Shelton;P. Sander
本文描述了美国得克萨斯州阿彻县Briar Creek Bonebed地区13个早二叠世四足动物长骨的组织结构，并通过一系列中段横切面对其进行了描述。这些骨骼在形态上属于三个分类群之一：Eryops，Archeria和Diadectes。然而，五个组织型被认可。第一类包括青少年骨骼。第二种组织型的特点是存在放射状的血管通道。第三种组织型的特征是许多纵管排列成规则的行。在第四种组织型中，在皮质的深部存在强烈的重塑，与板层骨的外层形成明显的边界。在第五种组织型中，皮质的深部逐渐向骨质疏松重塑，具有明显的大的周向排列的侵蚀腔层。对于股骨和肱骨，组织型与形态学相匹配。组织型II是Diadectespropadials的特征，组织型III是Eryopspropadials的特征，组织型IV是Archeriapropadials的特征。在尺骨、腓骨和桡骨中观察到形态学和组织学之间的差异。这种差异可以解释种间或种内变异。
The histological framework of thirteen Early Permian tetrapod long bones from a single locality, the Briar Creek Bonebed in Archer County, Texas, USA, is described from a series of transverse sections through the midshafts. The bones were morphologically categorized and belong to one of three taxa:Eryops,Archeria, andDiadectes. However, five histotypes are recognized. The first category includes the juvenile bone. The second histotype is characterized by the presence of radial vascular canals. The third histotype is characterized by the numerous longitudinal canals arranged in regular rows. In the fourth histotype, there is strong remodeling in the deep part of the cortex, creating a distinct border with the external layer of lamellar bone. In the fifth histotype, the deep part of the cortex is progressively remodeled towards osteoporosis with distinct layers of large circumferentially arranged erosion cavities. For femora and humeri, histotypes match morphology. Histotype II is characteristic forDiadectespropodials, histotype III is characteristic forEryopspropodials, and histotype IV is characteristic forArcheriapropodials. A discrepancy between morphology and histology is observed in the ulnae, fibula and radius. This discrepancy may be explained by interspecific or intraspecific variability.