title: Evolution in nervous systems.
authors.affiliation: Arizona Research Laboratories, University of Arizona, Tucson 85721.
authors.forename: E A
authors.initials: EA
authors.lastname: Arbas
authors.forename: I A
authors.initials: IA
authors.lastname: Meinertzhagen
authors.forename: S R
authors.initials: SR
authors.lastname: Shaw
mesh_terms: D000818:Animals; D005075:Biological Evolution; D006801:Humans; D009420:Nervous System / Q000254:growth & development; D009424:Nervous System Physiological Phenomena