Dickinsonia costata & Parvancorina minchami Ediacaran Fauna Oviraptor Because of the long tail

Because of the long tail and spine like appendage at the tip of the tail the Eurypterids have been called " sea scorpions

Dunkleosteus was not a shark but a placoderm with a shark-like tail

Paracytalocrinus hamitensis

indicates she was a female

capable of producing enough of a devastating impact to break the bones of an assailant

Dickinsonia costata & Parvancorina minchami Ediacaran Fauna Oviraptor Because of the long tailDickinsonia 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,