12(en) Rachel Collin, «Development, phylogeny, and taxonomy of Bostrycapulus (Caenogastropoda: Calyptraeidae), an ancient cryptic radiation», Zoological Journal of the Linnean Society, vol.144, no1, , p.75-101 (lire en ligne, consulté le ).
↑(en) Axel A. Olsson et Anne Horbison, «Pliocene Mollusca of southern Florida, with special reference to those from North Saint Petersburg», Academy of Natural Sciences of Philadelphia, , p.1-457.