Fig. 5 in Direct development in African squeaker frogs (Anura: Arthroleptidae: Arthroleptis) reveals a mosaic of derived and plesiomorphic characters

Fig. 5 Details of development of Arthroleptis xenodactyloides. a TS 3, left: dorsal view, right: caudal view. b TS 4, caudal view. c TS 5, dorsal view. d–g Development of the opercular fold. d TS 7, lateral view. Opercular fold covers one third of the forelimb buds. e TS 8, lateral view. Forelimbs almost covered beneath opercular fold. f TS 9, lateral view. Arrow indicates that forelimbs completely covered by opercular fold. g TS 10, lateral view. Forelimbs fully erupted. h–k Development