Annandale, N. (1924). The evolution of the shell-sculpture in fresh-water snails of the family Viviparidae. <em>Proceedings of the Royal Society of London. Series B.</em> 96(672): 60-76., available online athttps://doi.org/10.1098/rspb.1924.0011 page(s): 64 [details]
original descriptionAnnandale, N. (1924). The evolution of the shell-sculpture in fresh-water snails of the family Viviparidae. <em>Proceedings of the Royal Society of London. Series B.</em> 96(672): 60-76., available online athttps://doi.org/10.1098/rspb.1924.0011 page(s): 64 [details]