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Vertebrate Zoology

The Evolution of Vertebrates

Metazoa Organisms with body cavities; Allows further body system complexity; Gave rise to Protostomata and Deuterostomata
Metazoa: Three Embryonic Stages Ectoderm, mesoderm, endoderm.
Protostomata Rose from Metazoa; Mouth is the first opening formed in embryo
Deuterostomata Rose from Metazoa; Anus is the first opening formed in the embryo; grave rise to Chordata
Chordata Rose from Deuterostomata; dorsal, hollow nerve chord, notochord, post anal tail, endostyle, and sessile feeders; filter feeders, low energy
Vertebrata Rose from Chordata; 3 part brain; Gills; Pharyx; Complex internal organs; Vertebrae; Complex sensory organs; Extracellular digestion; Hox genes
Created by: LionsandGiants