Weir, J. (1945). A Review of Recent Work on the Permian Non-Marine Lamellibranchs and its Bearing on the Affinities of certain Non-Marine Genera of the Upper Palaeozoic. Transactions of the Geological Society of Glasgow. 20(3): 291-340.
A Review of Recent Work on the Permian Non-Marine Lamellibranchs and its Bearing on the Affinities of certain Non-Marine Genera of the Upper Palaeozoic