Keywords: Walcott Cambrian Geology and Paleontology II plate 21.jpg Plate 21 Middle Cambrian Annulata Wiwaxia Banffia and Pollingeria 1 Wiwaxia corrugata <small> Matthew </small> 2 Wiwaxia corrugata <small> Matthew </small> 3 Wiwaxia corrugata <small> Matthew </small> 4 Wiwaxia corrugata <small> Matthew </small> 5 Banffia constricta <small>Walcott</small> 6 Banffia constricta <small>Walcott</small> 7 Pollingeria grandis <small>Walcott</small> 8 Pollingeria grandis <small>Walcott</small> 9 Pollingeria grandis <small>Walcott</small> Charles D Walcott Middle Cambrian Annelids Smithsonian Miscellaneous Collections Volume 57 Number 5 Publication 2014 City of Washington Published by the Smithsonian Institution September 4 1911 Creator Charles Doolittle Walcott 1911 PD-old-80 Walcott Cambrian Geology and Paleontology II plates Walcott Cambrian Geology and Paleontology II plates missing identification |