Fig. 12From: Hand/foot splitting and the ‘re-evolution’ of mesopodial skeletal elements during the evolution and radiation of chameleonsChondrogenic differentiation in chameleon tarsus. During distal flattening expansion, the first elements to appear are the ulnare and distal tarsal 4 (a) followed by distal tarsal 3 and metatarsals 3–5 and the intermedium (b-c). Metatarsal 2 is followed along with an appearance of the tibiale (e-g). All embryos were at 107 dpo from clutchmatesBack to article page