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Pennsylvanian brachiopod, fish and conodont faunas from the Caliza Masiva (San Emiliano Formation) at the Mina Profunda area, Cantabrian Zone, NW Spain
Geobios ( IF 1.6 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.geobios.2020.03.004
Gustavo G. Voldman , M. Luisa Martínez Chacón , Christopher J. Duffin , Luis Pedro Fernández , Juan L. Alonso

Abstract A rock sample obtained from the Caliza Masiva of the San Emiliano Formation (Bashkirian–early Moscovian) in the Mina Profunda area (NE Villamanin) of the Bodon Nappe (Cantabrian Zone, NW Spain) has yielded numerous brachiopods and fish remains not frequently represented in the fossil record. The brachiopod assemblage comprises 13 taxa and is characterized by phosphatic (Langella, Orbiculoidea) as well as exceptionally preserved silicified calcitic elements (a small chonetid, Composita, Crurithyris, Lambdarina, and two minute terebratulids) as the main faunal components. Of special importance is the record of the microbrachiopod Lambdarina winklerprinsi nov. sp., which reduces the large Visean–Upper Permian gap in the stratigraphic record of this genus. Conodont elements recovered from the same insoluble residue are indicative of the upper Bashkirian Idiognathoides sulcatus parvus Zone. The accompanying fish remains consist of chondrichthyan teeth and scales, an acanthodian scale and osteichthyan tooth-bearing bones, isolated teeth and isolated scales, representing the first Pennsylvanian ichthyoliths analyzed from the Cantabrian Zone. The limestone beds with selective silicification in the San Emiliano Formation provide an exceptional opportunity to improve our knowledge on the patterns of life diversity over geological time.

中文翻译:

来自西班牙西北部坎塔布连区 Mina Profunda 地区 Caliza Masiva(圣埃米利亚诺组)的宾夕法尼亚腕足动物、鱼类和牙形石动物群

摘要 从位于 Bodon Nappe(西班牙西北部坎塔布连地区)的 Mina Profunda 地区(NE Villamanin)的 San Emiliano 组(巴什基尔-早期莫斯科)的 Caliza Masiva 获得的岩石样本产生了许多腕足类动物,而鱼类遗骸并不经常出现在化石记录中。腕足动物组合包括 13 个分类群,其特征是磷酸盐(Langella、Orbiculoidea)以及保存异常完好的硅化方解石元素(小 chonetid、Composita、Curithyris、Lambdarina 和两分钟 terebratulids)作为主要动物群成分。特别重要的是微腕足动物 Lambdarina winklerprinsi nov. 的记录。sp.,它减少了该属地层记录中的大维森 - 上二叠纪间隙。从相同的不溶性残留物中回收的牙形石元素表明上巴什基尔 Idiognathoides sulcatus parvus 带。伴随的鱼类遗骸由软骨鱼类的牙齿和鳞片、棘鱼类的鳞片和带牙鱼的骨头、孤立的牙齿和孤立的鳞片组成,代表了从坎塔布连地区分析的第一批宾夕法尼亚鱼石。圣埃米利亚诺地层中具有选择性硅化作用的石灰岩层提供了一个难得的机会,可以提高我们对地质时期生命多样性模式的认识。代表从坎塔布连地区分析的第一批宾夕法尼亚鱼石。圣埃米利亚诺地层中具有选择性硅化作用的石灰岩层提供了一个难得的机会,可以提高我们对地质时期生命多样性模式的认识。代表从坎塔布连地区分析的第一批宾夕法尼亚鱼石。圣埃米利亚诺地层中具有选择性硅化作用的石灰岩层提供了一个难得的机会,可以提高我们对地质时期生命多样性模式的认识。
更新日期:2020-04-01
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