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首页> 外文期刊>Scottish Journal of Geology >Scottish Middle Devonian fishes in Estonia
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Scottish Middle Devonian fishes in Estonia

机译：爱沙尼亚苏格兰中泥盆纪鱼类

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摘要

A number of Estonian Devonian fishes are shown to be junior synonyms of Scottish species. The Estonian sarcopterygian osteolepid Gyroptychius pauli was originally thought to be closely related to the Scottish species Gyroptychius milleri being differentiated by minor morphological differences of the skull roof. However, here we show that the only skull roof available of G. pauli to the original description (the holotype) was badly damaged in places. This and the fact that skull roofs of osteolepid fishes are morphologically highly variable has allowed us to compare the Estonian and Scottish species and show that G. pauli is a junior synonym of G. milleri. It has also been known for some time that Estonian coccosteid arthrodire Coccosteus orvikui was a junior synonym of the Scottish species Coccosteus cuspidatus. Here we present the evidence for this assumption and also show that the Scottish coccosteid arthrodire Millerosteus minor is almost certainly present in Estonia. Finally, it is shown that the three species have the same stratigraphical distribution in the two regions, strongly indicating a close faunal connection between the Middle Devonian of Estonia and the Middle Devonian Orcadian Basin of Scotland.
机译：许多爱沙尼亚泥盆纪鱼类被证明是苏格兰物种的初级同义词。最初认为爱沙尼亚的翼翅类骨脂性小头畸形马齿to与苏格兰物种小头畸形马齿eri有着密切的关系，后者通过头骨顶的微小形态差异而得以区分。但是，在这里我们显示，原始描述（原型）所用的唯一的鲍氏猪笼草头骨屋顶在某些地方受到了严重破坏。这个事实以及类骨质鱼类的头骨顶在形态上高度可变的事实，使我们能够比较爱沙尼亚和苏格兰的物种，并表明鲍利猪笼草是米尔利猪笼草的初级同义词。一段时间以来，人们还知道爱沙尼亚的球形肋节肢动物Coccosteus orvikui是苏格兰物种Coccosteus cuspidatus的初级同义词。在这里，我们提供了这一假设的证据，并且还表明，几乎可以肯定，爱沙尼亚存在苏格兰球尾藻节肢动物Millerosteus。最后，表明这三个物种在两个地区具有相同的地层分布，强烈表明爱沙尼亚中泥盆纪和苏格兰中泥盆纪奥卡德盆地之间的动物区系紧密。

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