Fossil flora from the Kazanian (Middle Permian) Iva-Gora locality, Soyana River, Arkhangelsk Region, Russia

Abstract

© 2015, Pleiades Publishing, Ltd. A floral assemblage from the Iva-Gora locality (middle reaches of the Soyana River, Arkhangelsk Region) is described. The flora includes lycopsids, sphenophytes, ferns, peltasperms (order Peltaspermales, families Peltaspermaceae and Angaropeltaceae), conifers, and vojnovskians (order Vojnovskyales). A new genus of isolated seeds, Megasylvella gen. nov., is established. Praephylladoderma sojanaeana (Zalessky, 1937) Naugolnykh, comb. nov., emend. nov. is newly combined. The new species Megasylvella ivagorica Naugolnykh, sp. nov. and Radicites trimorphus Naugolnykh, sp. nov. are described.