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Temporal range: Early to mid Cambrian
Image of the first complete Anomalocaris fossil found, residing in the Royal Ontario Museum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Dinocarida
Order: Radiodonta
Family: Anomalocarididae
Genus: Anomalocaris
Whiteaves 1892
  • A. briggsi
  • A. canadensis
  • A. pennsylvanica
  • A. saron

Anomalocaris ("abnormal shrimp") is an extinct genus of anomalocaridid, which are, in turn, thought to be closely related to the arthropods. The first fossils of Anomalocaris were discovered in the Ogygopsis shale by Joseph Frederick Whiteaves, with more examples found by Charles Doolittle Walcott in the famed Burgess Shale.