original descriptionReid, D. G. (1989). The comparative morphology, phylogeny and evolution of the gastropod family Littorinidae. <em>Philosophical Transactions of the Royal Society B.</em> 324: 1-110., available online athttps://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1989.0040 page(s): 91 [details]