波兰中泥盆世(Givetian)一新种沙棘螈(脊椎纲:异缘门)

IF 1.2 4区地球科学 Q2 GEOLOGY

Annales Societatis Geologorum Poloniae Pub Date : 2020-08-24 DOI:10.14241/asgp.2020.04

Marek Dec

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引用次数: 0

摘要

描述了波兰圣十字山Skaly组中泥盆世(Givetian)中泥盆世(givtian)的一种新属(psarkesteus gen. et sp. nov.)背板前部狭窄，后板长而窄。这两种特征，以及结节的形态和种类，使其区别于该组的其他代表。最显著的是大的，泪滴状的小结节，每具一平的或稍凹的表面和其尖端指向后，和有圆齿的基部，位于沿鳃板。Psarkosteus的侧线系统与Drepanaspis gemuendenensis相似，证实了早期重建的结果。

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A new Middle Devonian (Givetian) psammosteid (Vertebrata: Heterostraci) from Poland

A new genus and species of psammosteid heterostracan, Psarkosteus mediocris gen. et sp. nov., is described from the Middle Devonian (Givetian) of the Skaly Formation, the Holy Cross Mountains, Poland. The dorsal plate of Psarkosteus is constricted in its anterior part and the postorbital plate is long and narrow. Both features, along with the morphology and variety of tubercles, distinguish it from other representatives of the group. Most distinctive are big, teardrop-shaped tubercles, each with a flat or slightly concave surface and with its tip directed posteriorly, and a crenulated base, located along the branchial plates. The lateral line system in Psarkosteus is similar to that of Drepanaspis gemuendenensis and confirms earlier reconstructions.

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来源期刊

Annales Societatis Geologorum Poloniae 地学-地质学

CiteScore

2.60

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Annales Societatis Geologorum Poloniae (ASGP) is the scientific journal of the Polish Geological Society. Original contributions and review articles are considered for publication in Annales Societatis Geologorum Poloniae. Submissions for publication may be from all branches of the geological sciences, including applied and economic geology, as well as discussions of papers, previously published in the journal. The language of the journal is English.