Cambrian Predator Fossil
and counterpart, Soft-bodied animal; a widely distributed Cambrian
predator, and the largest animal from the Burgess Shale
Marjum Formation, Millard County, Utah
is the largest known Burgess Shale animal. Anomalocaris was widely
distributed with other finds in Australia, China, Greenland and
Utah. This Cambrian predator reached lengths of up to half a meter.
Complete specimens are rare but
the mouth parts are sometimes found in Lower Cambrian through lower
Upper Cambrian horizons. Anomalocaris swam with a series of lobes
along the sides of the body. In front it had large spiny limbs that
it used for grabbing prey. The specimen below has one of these limbs.
Even for Anomalocaris, this is a very large specimen. Elrathia kingii
often have healed bite marks attributed to Anomalocaris. This specimen
is a bit weathered, but still is a fine example of this unusual
Cambrian animal from America's Burgess Shale-like stra in Utah.
see: Utah Cambrian Explosion