Figure 9 in Phylogenetic assessment and systematic revision of the acoel family Isodiametridae

Figure 9. Vaginal sphincter presence or absence in species of Isodiametridae mapped on to the concatenated tree. The morphology of each species was coded following original descriptions and illustrations, as well as photos and live observation of species where possible.? indicates that the presence or absence of a vaginal sphincter was not examined/could not be determined.