Figure 1From: Emergence and migration of trunk neural crest cells in a snake, the California Kingsnake (Lampropeltis getula californiae)Phylogeny of Snake. We describe the phylogenetic position of snakes and other reptilians according to the most recent consensus [18]. The box with question marks refers to organisms for which neural crest migration has not been reported. The figure was drawn by the author, based upon Shedlock's (2007) recent phylogenetic analysisBack to article page