Keywords: Walcott Cambrian Geology and Paleontology II plate 34.jpg Plate 34 Middle Cambrian Crustaceans Hurdia Odaraia and Anomalocaris 1 Hurdia triangulata <small>Walcott</small> Hurdia victoria <small>Walcott 1912</small> 2 Odaraia alata <small>Walcott</small> 3 Anomalocaris gigantea <small>Walcott</small> Charles D Walcott Middle Cambrian Branchiopoda Malacostraca Trilobita and Merostomata Smithsonian Miscellaneous Collections Volume 57 Number 6 Publication 2051 City of Washington Published by the Smithsonian Institution March 13 1912 1912 Creator Charles Doolittle Walcott PD-old-80 Walcott Cambrian Geology and Paleontology II plates Walcott Cambrian Geology and Paleontology II plates missing identification Anomalocaris fossils Hurdia victoria |