End-Permian mass extinction pattern in the northern peri-Gondwanan region

High‐resolution Lopingian (Late Permian) timescale of South China

“…The Changhsingian in the Salt Range, Pakistan is represented by a cool-water conodont fauna characterized by Vjalovognathus and Merrillina species in the lower part of the Chhidru Formation and a warm conodont fauna in the topmost Changhsingian including Clarkina meishanensis followed by the Triassic index Hindeodus parvus (Wardlaw and Mei, 1999). The Lopingian Series in Tibet is well represented by the Selong Group at the Selong Xishan and Qubu sections (Shen et al, , 2001a(Shen et al, , 2003a(Shen et al, , 2006 and the Chitichun Limestone in the Yarlung-Zangbo Suture Zone (Diener, 1897;Shen et al, 2001b;Shen et al, 2003b). The equivalent of the Selong Group is called Senja Formation in Nepal (Waterhouse, 1978) and the Kuling Group in northern India (Garzanti et al, 1996).…”

“…Mesogondolella britanica is similar, if not identical, to slender forms of M. rosenkrantzi from the Sverdrup Basin. Age relationships of Mesogondolella sheni still need to be refined, but in general this species indicates a Changhsingian age because it occurs immediately below the Hindeodus parvus Zone in Tibet and Nepal (Shen et al, 2006). Conodonts from the uppermost Black Stripe and basal Blind Fiord Formation (non-spicular black to dark grey shale and siltstone) in the Canadian Arctic include Clarkina aff.…”

Discovery of an earliest Triassic, post-extinction foraminiferal assemblage above the Permian-Triassic boundary, Strandzha nappes, northwest Turkey.

“…The low est Tri as sic strata from the dif fer ent Permian-Tri as sic sec tions of the world (e.g., AltÏner et al, 2005;Groves et al, , 2007Shen et al, 2006;Haas et al, 2007) are char ac ter ized by mainly dolomitic lime stone, recrystallised lime stone with nu mer ous tiny foraminifers and reg u lar and pla nar milli metre-scale lami na tions with abun dant py rite crys tals as in the ÇaÈlayÏk sec tion (Fig. 7).…”

New Permian-Triassic conodont data from Selong (Tibet) and the youngest occurrence of Vjalovognathus

“…Numerous studies have been conducted to understand this event in the Palaeo-Tethys and Panthalassan regions (Erwin, 1994;Retallack, 1995;Renne et al, 1995;Isozaki, 1997;Knoll et al 2007;Brayard et al, 2009;Wignall et al, 2010;Grasby et al, 2011;Jochimscki et al, 2012;Payne and Clapham, 2012;Yin et al, 2013;Clarkson et al, 2015;Xie et al, 2017). The Perigondwanan margin is a major research area for the P-T boundary because of the distinctive history of the crisis in the region Retallack et al, 1998;Wignall and Newton, 2003;Waterhouse, 2004;Shen et al, 2006;2010;Shi and Waterhouse, 2010;Hermann et al, 2010;Clarkson et al, 2013;Metcalfe et al, 2013;Waterhouse and Shi, 2013). Precise conodont biostratigraphic control in Perigondwana underpins these research efforts.…”

“…Selong is one of the best-known Perigondwanan P-T boundary sections (Jin et al, 1996;Wignall and Newton, 2003;Shen et al, 2006), and it is vital for correlating between Perigondwana and other P-T boundary records because of the presence of both conodonts and ammonoids including the biostratigraphically-significant conodont Mesogondolella sheni and ammonoid Otoceras. This conodont species is first found in the Selong section and is regarded as a key latest Permian indicator Shen and Shi, 2002;Shen et al, 2003b;Shen et al, 2006).…”