Fig. 4 in Evolution of the claustrum in Cnidaria: comparative anatomy reveals that it is exclusive to some species of Staurozoa and absent in Cubozoa

Fig. 4 Histological sections of Manania uchidai (from peduncle/calyx connection region moving upward to manubrium region in a–h) showing accessory radial pockets, main radial pockets, and manubrium. a Four interradial septa (sp) at peduncle/calyx connection region; b, c lateral septal evaginations (lse), with a double layer of gastrodermis and central mesoglea, which gradually get closer, delimiting the claustra ostia (co); d, e complete connection of lateral septal evaginations, delimiting the