Subfossil Cladocera from a sediment core of small thermokarst Lake in Pechora Delta, Nenets Autonomous Region, northern Russia

Subfossil Cladocera remains were examined from small thermorkarst Lake 17-PE-03 (68.183967 N, 53.808247 E, Pechora Delta, Nenets Autonomous Region, Russia) from one core (48 cm-long). Results of the analysis are presented in date base. For the first time, the species Phreatalona protzi (Hartwig, 1900) (Crustacea: Cladocera) has been found in the Nenets Autonomous Region, Russia.