The some Mesozoic scorpionflies (Insecta: Panorpida=Mecoptera) of the families Mesopsychidae, Pseudopolycentrodidae [Pseudopolycentropodidae], Bittacidae and Permochoristidae. Paleontologicheskii Zhurnal, 1, Yanvar'-Fevral' 1997: 65-71. 69 [Zoological Record Volume 134]