来自爱尔兰克莱尔郡宾夕法尼亚的垂直嵌入的正立方体鹦鹉螺——一个不寻常的“分心下沉”案例?

Q4 Earth and Planetary Sciences

Irish Journal of Earth Sciences Pub Date : 2023-10-01 DOI:10.1353/ijes.0.a909326

Eamon Doyle

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引用次数: 0

摘要

石炭系克莱尔页岩组首次记录到垂直嵌套正圆锥鹦鹉螺体;(宾夕法尼亚州人)爱尔兰克莱尔郡的人。将该标本与岩石记录中少数垂直保存的正锥体进行比较，并对先前提出的这种不寻常保存的模型进行了回顾。提出了一种捕食者躲避机动时自行意外放置的新模型，作为一种可能的放置模式。

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A Vertically Embedded Orthoconic Nautiloid From the Pennsylvanian of County Clare, Ireland – An Unusual Case of ‘Distraction Sinking’?

A vertically embedded orthoconic nautiloid is recorded for the first time from the Clare Shale Formation (Carboniferous; Pennsylvanian) of County Clare, Ireland. The specimen is compared to the few recorded examples of vertically preserved orthocones in the rock record and previously proposed models of this unusual preservation are reviewed. A new model of self-propelled accidental emplacement during predator avoidance manoeuvres is proposed as one possible mode of emplacement.

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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%

发文量