爱尔兰基尔肯尼郡Jarrow组合(宾夕法尼亚)中Gyracanthus脊柱形态的多样性

Q4 Earth and Planetary Sciences

Irish Journal of Earth Sciences Pub Date : 2022-12-10 DOI:10.1353/ijes.0.0007

Aodhán Ó Gogáin

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引用次数: 0

摘要

首次详细描述了爱尔兰东南部宾夕法尼亚(Langsettian)时代的贾罗组合中的钩形鱼刺。棘分为胸棘、骨盆棘和肛门棘。根据其胸棘的形态，将Jarrow gyracanthid分配给Gyracanthus sp.，胸棘呈u形横断面，在外露区域具有不改变沿脊柱长度的远端方向的装饰脊。

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Diverse Gyracanthus Spine Morphologies From the Jarrow Assemblage (Pennsylvanian), County Kilkenny, Ireland

Gyracanthid fish spines are described in detail for the first time from the Pennsylvanian (Langsettian)-aged Jarrow Assemblage in southeast Ireland. The spines are divided into pectoral, pelvic and anal spine morphotypes. The Jarrow gyracanthid is assigned to Gyracanthus sp. based on the morphology of its pectoral spines, which display U-shaped transections that possess ornament ridges on the exsertion area that do not change orientation distally along the length of the spine.

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来源期刊

Irish Journal of Earth Sciences Earth and Planetary Sciences-Earth and Planetary Sciences (all)

CiteScore

0.90

自引率

0.00%

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