Bioerosional innovation for living in carbonate hardgrounds in the Early Ordovician of Sweden
Bioerosional innovation for living in carbonate hardgrounds in the Early Ordovician of Sweden
复制标题
瑞典早奥陶世碳酸盐硬地生活的生物侵蚀创新
DOI：
10.1080/002411601300068152
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发表时间：
2001
期刊：
影响因子：
1.5
通讯作者：
R. Bromley
中科院分区：
文献类型：
--
作者：
A. A. Ekdale;R. Bromley
一些世界上最古老的大钻孔位于瑞典南部奥兰岛上裸露的下奥陶统(Arenig)石灰岩的硬地上。遗迹化石，在这里被描述为Gasterchaenolites oelandicus isp。11月，似乎是由分类亲缘关系未知的无脊椎动物在硬化的底物中挖掘的栖息地结构。它们是这个遗迹属最古老的例子。在早期出现一种令人厌烦的生活习惯，代表了一种革命性的适应碳酸盐硬地的新策略。然而，从长远来看，这种创新的策略显然并不成功，因为这个特别的大而无趣的分类群似乎在奥陶纪早期出现后不久就消失了。
Some of the world's oldest macroborings occur in hardgrounds in lower Ordovician (Arenig) limestones exposed on the island of Oland, southern Sweden. The trace fossils, which are described here as Gastrochaenolites oelandicus isp. nov., appear to be dwelling structures excavated in the indurated substrate by invertebrates of unknown taxonomic affinity. They are the oldest examples of this ichnogenus. The appearance of a macroboring life habit at this early time represents a revolutionary new adaptive strategy for inhabiting carbonate hardgrounds. However, this innovative strategy apparently was not successful for the long term, because this particular macroboring taxon seems to have disappeared shortly after its early Ordovician appearance.