New Advances in Biostratigraphy of the Lower/Middle Norian Transition: Conodonts of the Dovško Section, Slovenia
作者： Tea Kolar-Jurkovšek , Luka Gale , Luka Gale , Bogdan Jurkovšek , Viktor Karádi
DOI: 10.1007/S12583-020-1382-Y
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摘要: This study presents the results of conodont biostratigraphy and microfacies analysis carried out on pelagic limestones Upper Triassic Dovsko Section in Slovenia, which represents eastern part Slovenian Basin. The age section ranges from Lacian 1 to Alaunian 1. succession is predominantly characterized by representatives genus Ancyrogondolella. Transitional morphologies towards faunas first appear 3 become common during Lacian-Alaunian transition. evolutionary development coincides with a shift dominantly radiolarian-bearing mudstone-wackestone-packstone filament- dominated wackestone-packstone, formation small neptunian dykes, may reflect environmental perturbations and/or change basin geometry. proliferation genera Epigondolella Mockina observed section, though Ancyrogondolella still present this interval. Systematic description taxa provided, seven new species two subspecies are established. advances will be great value further biostratigraphic studies, especially areas without ammonoid faunas, reconstruction paleogeography
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