Geraudie J, Meunier F J
Tissue Cell. 1984;16(2):217-36. doi: 10.1016/0040-8166(84)90046-6.
The present work is devoted to the organization and ultrastructure of the fin rays or camptotrichia of two living Dipnoi (lungfishes) Protopterus and Neoceratodus. In both species, these rods have a dual structure: only the superficial region facing the stratified epidermis is mineralized while the deep one is made of a dense unmineralized network of collagen fibrils forming a permanent pre-osseous tissue. Only the camptotrichia of Neoceratodus is made of cellular bone. This study confirms the structural peculiarities of these camptotrichia when compared to the dermal skeleton of the Actinopterygii constituted by the bony lepidotrichia and the actinotrichia. These results are discussed and compared to fossil dipnoan fin rays.
本研究致力于两种现存肺鱼（非洲肺鱼属和澳洲肺鱼）鳍条或角质鳍条的组织学和超微结构研究。在这两个物种中，这些鳍条具有双重结构：只有面向复层表皮的表层区域矿化，而深层区域由致密的未矿化胶原纤维网络组成，形成一种永久性的骨前组织。只有澳洲肺鱼的角质鳍条由细胞性骨组成。与辐鳍鱼类由骨质鳍条和鳍条质组成的真皮骨骼相比，本研究证实了这些角质鳍条的结构特点。本文对这些结果进行了讨论，并与化石肺鱼的鳍条进行了比较。
