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Wilson, R. B. (1963). The lamellibranch genus Prothyris in the Upper Devonian and Carboniferous of Great Britain. Palaeontology. 6(1): 136-144, pl. 20.
Wilson, R. B. (1963). The lamellibranch genus Prothyris in the Upper Devonian and Carboniferous of Great Britain. Palaeontology. 6(1): 136-144, pl. 20.
