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Contact: Joseph Botting
Science China Press

Metaxyspongia from the Early Cambrian Hetang Biota, China

Caption: This is part of one of the new specimens of Metaxyspongia with tetraradial symmetry, and reconstruction of the whole animal. The fossil is 9 mm wide, with the delicate skeleton flattened onto the plane of the rock. Most of the skeleton is composed of cross-shaped spicules, except for the columns of modified spicules that define the symmetry of the sponge.

Credit: ©Science China Press

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Related news release: Widespread tetraradial symmetry among early fossil sponges

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