Traits name details
original description
Birshteyn, Ya. A. (1967). Notes on Paleozoic Malacostraca of USSR. Pygocephalomorpha Int. Geol. Rev. 9(4): 598-603 (look up in IMIS) [details]
source of synonymy
Schram, F.R. (1980). Pygocephalus from the Upper Carboniferous of the Soviet Union Journal of Paleontology. v. 54, p. 50-56. [details] Available for editors
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