Student Project Figures Figure 18 Cladogram showing the phylogenetic relationships between the families Pyuridae, Styelidae and Mogulidae within the order Stolidobranchia (adapted from Pérez-Portela 2009). The cladogram also shows the phylogenetic relationships of the genus Pyura within the family Pyuridae (adapted from Pérez-Portela 2009). Figure 18