Greven H, Wanninger A C, Clemen G
Institut für Zoomorphologie und Zellbiologie, Universität Düsseldorf.
Ann Anat. 1997 Feb;179(1):21-32. doi: 10.1016/S0940-9602(97)80129-X.
Structure and arrangement of the teeth were studied in the hemiramphid Dermogenys pusillus, using scanning electron microscopy as well as cleared and stained specimens. The teeth of the jaws are small, monocuspid, and tilted towards the esophagus. They are arranged along the lateral edges of the premaxillas and dentaries. Each premaxilla bears additional teeth on an osseous bar extending from rostro-lateral to medio-lingual. The dentition of both dentaries curves slightly within the cavity of the mouth and gently tapers off laterorostrad just beyond the tip of the upper jaw. The part of the lower jaw, which typically protrudes beyond the upper jaw, is without teeth. One dorsal and two lateral tooth-bearing bony plates (tooth plates) are found in the pharyngeal region. Their teeth are largely irregular in arrangement. The teeth on the two lateral plates are small and monocuspid, whereas the dorsal and the ventral tooth plate possess additional strong bi- and tricuspid teeth. The teeth of the jaws and of the pharyngeal region obviously have a bony pedicel ("attachment bone") which is asymmetric in all teeth. An elastic suture connects the cone of dentine with the bony pedicel. The special construction of the teeth and their arrangement on the various dentigerous bones will be discussed with respect to their function in catching prey.
利用扫描电子显微镜以及透明和染色标本，对半颚鱼（Dermogenys pusillus）的牙齿结构和排列进行了研究。颌骨的牙齿小，单尖，且向食道倾斜。它们沿着前颌骨和齿骨的侧缘排列。每块前颌骨在从吻侧外侧延伸至中舌侧的骨质条上有额外的牙齿。两块齿骨的牙列在口腔腔内略微弯曲，并在上颌尖端之外向吻侧外侧逐渐变细。下颌通常突出于上颌之外的部分没有牙齿。在咽部区域发现一块背侧和两块侧生齿骨板（齿板）。它们的牙齿排列大多不规则。两块侧板上的牙齿小且单尖，而背侧和腹侧齿板有额外的强壮双尖和三尖齿。颌骨和咽部区域的牙齿显然有一个骨质蒂（“附着骨”），在所有牙齿中都是不对称的。一条弹性缝线将牙本质锥体与骨质蒂相连。将结合牙齿在捕食中的功能来讨论牙齿的特殊结构及其在各种生齿骨上的排列。
