Reconstruction of Dickinsonia costataOne of the most famous fossils of the Ediacara biota is Dickinsonia, first described by Sprigg in 1947. Dickinsonia fossils were preserved as imprints of ovoid or ribbon- like creatures with bilateral symmetry. Their sizes range from a few millimeters to practically a meter in length. The animal also appeared to be segmented. The affinities of Dickinsonia were and is, still today, highly debated... Continue reading on Paleoexhibit.