We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOntogenetic torsion in two basal gastropods occurs without shell attachments for larval retractor muscles.AuthorsPage LRPublicationEvolution & development, 2002, Vol 4, Issue 3, p212ISSN1520-541xPublication typearticleDOI10.1046/j.1525-142x.2002.02005.x