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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Trends Neurosci. 2016 Dec 30;40(2):92–105. doi: 10.1016/j.tins.2016.11.005

Figure 1. Cnidarians as model organisms for studies of nervous systems.

Figure 1

A: Schematic phylogenetic tree showing the relationships of the five classes within the phylum Cnidaria. Species of cnidarians used for research on nerve systems and referred to in this Review are listed. Complete genome sequences are available for several cnidarian species (marked with asterisk) [21]. B: Schematic phylogenetic tree showing main branches of metazoan evolution and position of Cnidaria among the non-bilaterian Metazoa. As the phylogenetic position of comb-jellies (Ctenophora) remains controversial [13– 15], the branch leading to this group is represented by a dashed line.