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Aegirocassis benmoulai

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Description

Aegirocassis benmoulai

Ordovician

Fezouata Formation

Mecissi-Zagora Region, Draa Valley, Morocco.

55mm anomalocaridid appendage on 160mm slab.

Soft-bodied.  Arthropod.

Aegirocassis is a genus of anomalocaridid known only from the Early Ordovician of Morocco.  It was one of the largest of all arthropods that ever lived, reaching about 6 1/2 feet long and was almost certainly the largest animal of its time.  Like the largest animal of our time, the blue whale, it has been determined to have been a filter-feeder that descended from predatory ancestors.

Have a look at this amazing 3D model of Aegirocassis courtesy of Google and darwinmuseum.ru. Click on the arrows at the bottom right corner to see it full screen!

Additional information

Weight 300 g