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Body sizes of brachiopods and planktonic tentaculites (dacryoconarids) decrease continuously during the Upper Eifelian. This feature is closely related to theotomari Event and the subsequent black shale period, resulting from lowered oxygen levels worldwide in most parts of the marine ecosystem. It is assumed here that low oxygen availability limited physiological processes and, consequently, the...
Kurzfassung Das marine Mitteldevon des Rheinischen Schiefergebirges ist durch eine lithologisch und faunistisch hoch-differenzierte Entwicklung charakterisiert; daher sind Korrelationen oft schwierig. Kurzfristige, globale Umweltveränderungen aber können weltweit synchron zu längerfristigen Fazieswechsel führen und damit auch zu Umgestaltungen in der Lebewelt. Eine solche exzeptionelle Fazies ist...
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