2026-06-08T07:22:54Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1067522024-07-17T00:04:56Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Stori, Lorenzo author Ronchi, Ausonio author López Gómez, José author Márquez Aliaga, Ana author Ros Franch, Sonia author Goy Goy, Antonio author Márquez Sanz, Leopoldo author Gandin, A. author Martín Chivelet, Javier author 2024-08 Stratigraphic and palaeontological analyses of the Middle Triassic (latest Anisian–Ladinian) in Muschelkalk facies are performed here to further unravel the palaeogeographic evolution of Sardinia in this time-frame. These shallow marine successions reveal a significant palaeontological record comprising facies and marker fossils (ammonoids, bivalves, conodonts, foraminifera etc.) reflecting a regional transgressive episode recorded throughout the West Mediterranean, after the Permian–Triassic biotic crisis. Particularly rich in the Nurra and Sarcidano-Gerrei areas, the facies/fossil record indicates the progressive westward settling of carbonate platforms, and consequently the development of new migration and irradiation routes for Sephardic faunas from the southeast (Palaeotethys) and Alpine faunas (Neotethys) from the northeast. Based on new findings and the revision of palaeontological associations previously reported, comparisons were made with associations of adjacent domains (Balearic Islands, Levantine area), thus refining their palaeoecological distribution and better framing Sardinia as a key area in the palaeogeographic evolution of the West Tethys during the Ladinian. Stori, Lorenzo, et al. «Middle Triassic (Muschelkalk) Transgression in the West Tethys: Biostratigraphic Evidence from Sardinia (Italy)». Palaeoworld, vol. 33, n.o 4, agosto de 2024, pp. 997-1024, https://doi.org/10.1016/j.palwor.2023.08.001. 1871-174X 10.1016/j.palwor.2023.08.001 https://hdl.handle.net/20.500.14352/106752 https://doi.org/10.1016/j.palwor.2023.08.001 https://www.sciencedirect.com/science/article/pii/S1871174X23000768 Middle Triassic (Muschelkalk) transgression in the West Tethys: biostratigraphic evidence from Sardinia (Italy)