Image of pencil urchin

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Pencil Urchin

Stylocidaris affinis (Philippi 1845)

Body symmetry

Paul and Smith 1984
pentaradial symmetry
URI: http://eol.org/schema/terms/pentaradially_symmetric

Definition: radial symmetry with a five-fold repeating pattern

Attribution: https://en.wikipedia.org/wiki/Symmetry_in_biology#Subtypes_of_radial_symmetry

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(adult)