"Anomalocaris" has been misidentified several times, in part due to its makeup of a mixture of mineralized and unmineralized body parts; the mouth and frontal appendage was considerably harder and more easily fossilized than the delicate body. "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 by GSC paleontologist Joseph Frederick Whiteaves. The specimens are now known to represent isolated frontal appendages, but Whiteaves interpreted them as the abdomens of phyllocarid crustaceans. Noting its unusual anatomy for the abdomen of a crustacean, Whiteaves gave it the name "Anomalocaris", meaning "unlike other shrimps". In 1928, Danish paleontologist Kai Henriksen proposed that "Tuzoia", a Burgess Shale arthropod which was known only from the carapace, represented the missing front half of "Anomalocaris". The artists Elie Cheverlange and Charles R. Knight followed this interpretation in their depictions of "Anomalocaris".