Titre
Ostracod recovery after Permian–Triassic boundary mass-extinction: The south Tibet record
Type
article
Institution
Externe
Auteur(s)
Forel, Marie-Béatrice
Auteure/Auteur
Crasquin, Sylvie
Auteure/Auteur
Brühwiler, Thomas
Auteure/Auteur
Goudemand, Nicolas
Auteure/Auteur
Bucher, Hugo
Auteure/Auteur
Baud, Aymon
Auteure/Auteur
Randon, Carine
Auteure/Auteur
Liens vers les personnes
ISSN
0031-0182
Statut éditorial
Publié
Date de publication
2011
Volume
308
Numéro
1
Première page
160
Dernière page/numéro d’article
170
Langue
anglais
Résumé
Lower to Middle Triassic ostracods from the Tulong section, south Tibet, are described here for the first time. Samples from the first two stages of the Early Triassic (Griesbachian and Dienerian) are barren of ostracods; the following stage (Smithian) revealed low diversity ostracod faunas; a substantial diversification in taxa began at the base of the fourth stage (Spathian) and developed into the first stage of the Middle Triassic (Anisian). Furthermore, exploration of additional feeding modes is developed in the Spathian and Anisian, with notable occurrence of filter-feeding taxa. High abundance of filter-feeding ostracods in Spathian and lower Anisian units indicates that benthic habitats became oligotrophic. These habitats typically harbored ostracod faunas of Mesozoic affinities, suggesting that the evolutionary turnover of ostracods was fostered by the declining input of nutrients from the Spathian on. Marked faunal similarities with other Tethyan areas, mainly the northern part of Tethys, are observed during Spathian and Anisian times.
PID Serval
serval:BIB_4A24C7F6EEC1
Date de création
2019-10-30T17:17:17.233Z
Date de création dans IRIS
2025-05-20T18:26:32Z