Sarycheva, T. G. (1965). Productida. In: The development and change of marine organisms at the Palaeozoic-Mesozoic boundary. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta (Moscow). 108: 209-232.
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Sarycheva, T. G.
1965
Productida. In: The development and change of marine organisms at the Palaeozoic-Mesozoic boundary
Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta (Moscow)