Aristov D.S., Rasnitsyn A.P.
New and little known species of the genus Permosialis (Insecta: Palaeomanteida: Permosialidae) from the Middle Permian of Russia
Number: 467, Pages: 17 - 22
Permosialis belebei sp. n. from Kityak locality (Kazanian Stage of Middle Permian, Kirov Region of European Russia) and P. bayda sp. n. from Baydaevskii coal site (Urzhumian Stage of Middle Permian, Kemerovo Region of West Siberia) are described as new, and Permosialis ualentovae Novokshonov et Zhuzhgova, 2004 from Kityak locality is redescribed.