Ausia
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Ausia is a curious Precambrian-age fossil that basically consists of a hollow cylinder taping to a cone on one end. The surface is covered with circular rows of depressions("windows") that taper into ovals toward the conical point. Ausia Fenestrata, named for the town of Aus in Namibia, is the only known Vendian animal with pores. Still, there is some question as to whether these pores completely penetrate the animal's wall. It may be a primitive sponge.