A new genus <Emphasis Type="Italic">Navipelta</Emphasis> (Peltaspermales,Pteridospermae) from the Permian/Triassic boundary deposits of the Moscow syneclise

A new genus of peltaspermalean ovuliferous organs Navipelta gen. nov. is described from the terrestrial deposits of the Nedubrovo locality (village of Nedubrovo, Vologda Region, Russia), belonging to the base of Vetlugian Group (Upper Permian-Lower Triassic). Data on the anatomy of the peltate bilateral ovuliferous organs are obtained for the first time. Vascular strands in the peltoid depart from that of a stalk and branch up to three times distally. Transfusion tissue around the vascular strands is well developed. The new genus had a system of radially arranged resin canals, broaden into large secretory cavities.