Figure 1 in Phylogeny and evolution of corambid nudibranchs (Mollusca: Gastropoda)

Figure 1. Examples of external features used for phylogenetic analyses from living specimens of cryptobranch and phanerobranch Doridoidea. A, Adalaria jannae Millen, 1987: showing usual phanerobranch onchidoridid pattern with dorsal gills, but without gill cavity; note the well-defined postbranchial gland; specimen from Western Pacific, Kamchatka, 7 mm in length. B, Adalaria jannae Millen 1987: showing omega-shaped notum, 8 mm in length. C, corambid onchidoridid Loy meyeni Martynov, 1994a with three dorsal gills in a small cavity; specimen from the Sea of Japan, Peter the Great Bay, 6.5 mm in length. D, corambid onchidoridid Corambe mancorensis Martynov et al., 2011: with ventral serial gills and three separate median gills in a semiclosed cavity; specimen from Mancora, Peru, 4 mm in length. E, Cadlina laevis (Linnaeus, 1767): showing a 'typical' cryptobranch chromodoridid pattern, with dorsal gills in a well-defined gill cavity; specimen from White Sea, Kandalakshsky Bay, 25 mm in length. F, Onchimira cavifera Martynov et al. 2009: an onchidoridid with dorsal gills in a well-defined gill cavity; specimen from Western Pacific, Kamchatka, 21 mm in length. Abbreviations: dg, dorsal gills; gc, gill cavity (= gill pocket); mg, median gills; pg, postbranchial gland. Photos: A, E–F, Tanya Korshunova; B, Karen Sanamyan; C, Alexander Martynov; D, Michael Schrödl & Bastian Brenzinger.