ancestral arthropods

How Old Is Anomalocaris? Anomalocaris lived in North America, Asia, and Australia during the Late Cambrian Era, from 535 – 520 million years ago. When was Anomalocaris created? Anomalocaris fossils were first collected in 1886 or 1888 by Richard G. McConnell of the Geological Survey of Canada. The specimens were described and named in 1892