Dickinsonia costata & Parvancorina minchami Ediacaran Fauna Quetzalcoatlus Complete left lower jaw from

Complete left lower jaw from the Late Cretaceous of Alberta

The coyote

or duck-bills

About 125 million years ago

several of the most common genera of late Neoproterozoic discoidal body fossils worldwide

Dickinsonia costata & Parvancorina minchami Ediacaran Fauna Quetzalcoatlus Complete left lower jaw fromDickinsonia lived approximately 560 541 million years ago, during the Late Ediacaran or Pre Cambrian. It was contemporaneous with other odd Ediacaran organisms, which resemble mud filled bags, stalks, and mattresses. These aren't animals, as we know them. Dickinsonia is sometimes put in the phylum Proarticulata, which would be the only animal phylum to go completely extinct if it did really exist. Other animals sometimes put in this phylum are Yorgia,