Global biostratigraphic comparison and correlation of an early Cisuralian palynoflora from Bolivia

Abstract

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Upper Pennsylvanian Age of the Lower Talchir Formation in the Wardha Basin, Central India, Based on Guide Palynomorphs Present in Radiometrically-Dated Palynozonations in South America, Africa, and Australia

“…U-Pb geochronology (ID-TIMS of zircons) from lowermost tuff sample of five interbedded tuffs analyzed provided an absolute age of 298.9 ± 0.15 Ma (earliest Asselian) and the uppermost dated late Sakmarian (291.6 Ma ± 0.9 Ma). This interval confirmed previous microfossil (conodonts, fusulinids) ages and supports that the plant remains belonging to the Glossopteris Flora recorded in the Coal Member appeared in the late Sakmarian (di Pasquo et al, 2015). A correlation is proposed herein between the present PII of the Talchir Formation and the lower Vc Zone (Fig.…”

“…Nevertheless, correlations between farther regions in Gondwana are still possible due to the existence of index taxa having confident FADs, enhanced by absolute dates when interbedded igneous rocks are available in the successions (e.g., Bangert et al, 1999;Santos et al, 2006;Guerra-Sommer et al, 2008;Stephenson, 2009;Gulbranson et al, 2010;Césari et al, 2011;Mori et al, 2012;di Pasquo et al, 2015;Barbolini et al, 2016Barbolini et al, , 2018Griffis et al, 2019;Valdez et al, 2020).…”

“…Additionally, a taxonomic revision of illustrated and listed endemic species of the Permian successions in India (e.g. Tiwari & Tripathi, 1992;Aggarwal & Jha, 2013, and their references), is required as previously highlighted in several publications (Truswell, 1980;Stephenson, 2008;Modie & Le Hérissé, 2009;di Pasquo et al, 2015di Pasquo et al, , 2021Barbolini et al, 2018). In the case of those not illustrated taxa a revision of samples of their respective works or the development of new studies to identify Pennsylvanian and Permian guide species is mandatory (see Murthy et al, 2020;di Pasquo et al, 2021).…”

An investigation of a Devonian/Carboniferous Boundary section on the Bolivian Altiplano

“…3b-c). There is an uninterrupted Devonian-Mississippian sequence that contains diamictites, the global index miospore Retispora lepidophyta and claystones suitable for palynological recovery (Díaz-Martínez, 1992;Díaz-Martínez et al 1999;di Pasquo et al 2015di Pasquo et al 2015di Pasquo et al 2015. These make it an ideal study area.…”

A palynostratigraphic study of the Umrer Coalfield of Wardha Basin, Maharashtra State, Central India and its putative correlation with Indian and other Gondwanan areas

“…Recent studies on Argentinan Permian assemblages from Río Francia (Gutiérrez et al, 2010), La Veteada and Andapaico formations Balarino et al, 2012) have incorporated new elements to LW Biozone, some of which are in common with the Umrer assemblage (e.g. Caheniasaccites flavatus, (di Pasquo and Grader, 2012;di Pasquo et al, 2014).…”