Bryozoa. Biostratigraphy of the Palaeozoic of the Sayano-Altai Mountains. I. Early Palaeozoic., Khalfina, L. L. Biostratigraphy of the Palaeozoic of the Sayano-Altai Mountains. I. Early Palaeozoic. Trud. SNIIGGIMS 19 1960: 362, 393-400 3 pls. [In Russian.]", 1962: 362, 393-400. Chapter pagination: 362, 393-400. [Zoological Record Volume 99]