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首页> 外文期刊>Facies >Foraminiferan tests and dasycladalean thalli as cryptic microhabitats for thaumatoporellacean algae from Mesozoic (Late Triassic–Late Cretaceous) platform carbonates
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Foraminiferan tests and dasycladalean thalli as cryptic microhabitats for thaumatoporellacean algae from Mesozoic (Late Triassic–Late Cretaceous) platform carbonates

机译：有孔虫测试和达塞克拉达勒藻作为中生代（晚三叠世-晚白垩世）碳酸盐台地丘脑藻类藻类的隐性微生境

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Thaumatoporellacean algae are widespread constituents in Middle Triassic–Cretaceous shallow-marine carbonates of the Tethyan realm. Based on various examples from Mesozoic limestones of Mediterranean platforms (e.g., Dinaric, Apenninic, Apulia) and rare records of Iberia (Pyrenees), Saudi Arabia and Mexico, it is shown that thaumatoporellaceans commonly dwelt as cryptoendoliths in the tests of larger benthic foraminifera and the thalli of dasycladalean algae. Their high morphological plasticity allowed the test invasion and the adaptation to the available interior spaces (chambers, apertures). The temporal distribution of cryptoendolithic thaumatoporellaceans with Wrst records in the Late Triassic, shows acme intervals in Early– Middle Jurassic and Early–Late Cretaceous times. Within the foraminiferans, the thaumatoporellaceans were erroneously considered as an integral part of the test, respectively, phrenoteca-like structures (species Biokovina gradacensis) in the Lower Jurassic and trematophore (species Scandonea? mediterranea) in the Upper Cretaceous. Therefore, the presence of phrenoteca-like structures in the Biokovinidae, being part of the family diagnosis, is challenged. The comparably thin walls of the cryptoendolithic thaumatoporellacean algae are interpreted as an adaptation to the poorly illuminated microhabitats (photoadaptation) in order to maximize light capture for photosynthesis.
机译：Thaumatoporellacean藻类是特提斯地区中三叠纪-白垩纪浅海碳酸盐中的广泛成分。根据地中海平台中生代石灰岩（例如，迪纳里克，亚平宁尼，普利亚）的各种例子以及伊比利亚（比利牛斯），沙特阿拉伯和墨西哥的稀有记录，表明在较大的底栖有孔虫和大孔虫的测试中，丘陵足类藻类常以隐孢子虫居住。 dasycladalean藻类的藻类。它们的高形态可塑性允许测试侵入并适应可用的内部空间（腔，孔）。三叠纪晚期具有Wrst记录的隐岩质丘脑变色藻类的时间分布在侏罗纪中-早侏罗纪和早白垩世晚期显示极点间隔。在有孔虫科中，错误地将丘脑金龟子科分别视为下侏罗纪的类phrenoteca样结构（Gradkovensis的种Biokovina gradacensis）和白垩纪的上层瘤体（Scandonea？mediterranea的种）。因此，作为家庭诊断的一部分，Biokovinidae中phrenoteca样结构的存在受到了挑战。隐岩藻丘脑藻类藻类的相对较薄的壁被认为是对光照不足的微生境的适应（光适应），以最大程度地捕获光合作用。

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