Last modified on 13 July 2016, at 03:14

Bilateria

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The Bilataria are one of the two basic groups of the Metazoans, the other being Radiata.

Bilataria are characterised by having a two-fold symmetry - front and back, left and right body surfaces. They also develop from three embryonic tissue layers, namely the inner endoderm, middle mesoderm and the outermost ectoderm.