Figure 1From: Proteomic characterization and evolutionary analyses of zona pellucida domain-containing proteins in the egg coat of the cephalochordate, Branchiostoma belcheriA cladogram showing the phylogenetic relationship of phyla and subphyla in Deuterostoma and the remote relationship of the protostoma with the phylum Mollusca (dashed lines). The clades denoted with ‘*’ are the animal groups from which egg coat ZP proteins have been previously identified. The clades denoted with ‘+’ are the subphyla investigated in this study. Figure modified from Bourlat et al., 2006 [28].Back to article page