Keywords: Walcott Cambrian Geology and Paleontology II plate 18.jpg Plate 18 Middle Cambrian Annulata Miskoia 1 Miskoia preciosa <small>Walcott</small> 2 Miskoia preciosa <small>Walcott</small> 3 Miskoia preciosa <small>Walcott</small> 4 Miskoia preciosa <small>Walcott</small> 5 Miskoia preciosa <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 |