Redescription of the Type Species for the Genus ‡Notogoneus (Teleostei: Gonorynchidae) Based on New, Well-Preserved Material
Redescription of the Type Species for the Genus ‡Notogoneus (Teleostei: Gonorynchidae) Based on New, Well-Preserved Material
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基于保存完好的新材料对 Notogoneus 属（Teleostei：Gonorynchidae）模式种的重新描述
DOI：
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发表时间：
2008
影响因子：
1.4
通讯作者：
Terry. Grande
中科院分区：
文献类型：
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作者：
L. Grande;Terry. Grande
摘要科普是广泛分布于晚白垩世至晚渐新世的Notogoneus属的模式种。该物种的模式产地在怀俄明州西南部的绿色河组的始新世早期化石丘段。在地质学上，它是北美Gonorynchidae科最年轻的已知物种，尽管该科在欧洲和澳大利亚的渐新世和中新世湖泊沉积物中被发现，今天仍然存在于太平洋的热带海洋环境中（Gonorynchus spp.）。在本文中，我们还纠正了以前发表的形态描述中的一些错误。Osculus（例如，在头骨和尾部骨骼）基于一个大的，新的样本保存完好，精心准备的标本。该物种的准确描述很重要，因为它是该属的模式，也是迄今为止所有已知的Notogoneus物种中保存最好的。此外，它可能揭示新的光的相互关系Gonorynchidae（工作正在进行中的作者）。[2]南极龙似乎生活在亚热带的淡水环境中。根据绿色河组的分布数据和物种多样性，我们怀疑†N。Osculus可能是一种洄游性鱼类，生活在化石湖的中心（离岸）区域，在其生活的其他部分，在连接溪流和河流。Notogoneus属的大多数或所有物种都来自淡水沉积物，并且在北美，欧洲，亚洲和澳大利亚都有物种。现存的Gonorynchus属的物种都是海洋性的，并且在印度洋-太平洋和南大西洋都有发现。
Abstract †Notogoneus osculus Cope, the type species for the geographically widespread Upper Cretaceous to Upper Oligocene genus †Notogoneus (Gonorynchidae), is redescribed in detail based on much new material. This species is known from the Early Eocene Fossil Butte Member of the Green River Formation, southwestern Wyoming. It is geologically the youngest known species of the family Gonorynchidae in North America, although the family is known from Oligocene and Miocene lacustrine deposits of Europe and Australia and is extant today in tropical marine environments of the Pacific (Gonorynchus spp.). In this paper we also correct a number of mistakes in previously published morphological descriptions of †N. osculus (e.g., in skull and caudal skeleton) based on a large, new sample of well-preserved, well-prepared specimens. Accurate description of this species is important because it is the type for the genus and it is also by far the best preserved of all known species of †Notogoneus. In addition, it may shed new light on the interrelationships of Gonorynchidae (work in progress by the authors). †Notogoneus appears to have inhabited a freshwater, subtropical environment. Based on distribution data and species diversity within the Green River Formation, we suspect that †N. osculus may have been a migratory fish, living in the central (off-shore) regions of Fossil Lake during part of its life, and in connecting streams and rivers during other parts of its life. Most or all species of the genus †Notogoneus are known from freshwater deposits and species are known from North America, Europe, Asia and Australia. Species of the extant gonorynchid genus Gonorynchus are all marine and are known from the Indo-Pacific and southern Atlantic.