The monotypic genus Alekhosara Aristov, 2008 from the locality Novo-Alexandrovka (Russia, Orenburg Region; Upper Permian, Severodvinian Stage) is briefly redescribed and transferred family Liomopteridae (order Reculida) to Locustavidae Orthoptera). Thus, this possibly a most ancient representative of orthopteran suborder Caelifera, previously known since Early Mesozoic only.

The Permian-Triassic Mass Extinction (PTME) is the greatest biotic crisis of Phanerozoic. In terrestrial settings, PTME appears to have been diachronous and it has suggested that losses initiated before marine crisis. We examine organic carbon-isotope (?13Corg) geochemical proxies for environmental change in a palaeotropical wetland succession from southwest China. A newly constructed astronomi...