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Rare Asaphiscus wheeleri with Bite Marks
UTAH • ASAPHISCUS
Stock Number TTUTZ02

Name:   Asaphiscus wheeleri
Age:  Middle Cambrian
Formation:  Wheeler Formation
Location:  Millard County, Utah
Size:  Trilobite is 1.65 inches long
This specimen is not for sale
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This is a trilobite with an interesting story to tell. It is a large Asaphiscus wheeleri from the Wheeler Formation of Utah. This trilobite was found by Steve Hess in 2000. The trilobite exhibits excellent detail and is wonderfully articulated. Now comes the story - the right side of the trilobite exhibits large, clearly defined bites! The predator was probably an Anomalocaris, the T. rex of the Cambrian seas. Did this bite cause the trilobite to die? We will never know for sure. However, the bite mark appears to have healed prior to fossilization, so maybe the critter survived the attack. Elrathia are occasionally found with predation scars, but very few Asaphiscus have been found with bite marks. This is an excellent (and highly unusual) example of predation amongst organisms of the Cambrian Sea.