Here is a pathologic Utah Trilobite of the species Elrathia kingii. The trilobite injury is in an advanced stage of regeneration. The actual injury must have happened a few molts ago. However, several puncture marks can still be seen. Such injuries certainly make one think of a predator like Anomalocaris with its spiked claws. | |||
Location: | Millard Co., Utah, USA | ||
Size trilobite: | about 27 mm long | ||
Age: | Middle Cambriun, Wheeler Fm. (about 518 Mill. Y.) |