Smithsonian Miscellaneous Collections
SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 57, NUMBER 5 CAMBRIAN GEOLOGY AND PALEONTOLOGY No. 5.-MIDDLE CAMBRIAN ANNELIDS With Six Plates BY CHARLES D. WALCOTT (PUBLICATIOK 2014) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION SEPTEMBER 4, 1911 BALTIMORK, MD., U. S. A. CAMBRIAN GEOLOGY AND PALEONTOLOGY II No. 5.—MIDDLE CAMBRIAN ANNELIDS By CHARLES D. WM^COTT (With Six Plates) CONTENTS PAGE Introduction [10 Cambrian annelids II Classification II Relations to living annelids II Descriptions Class Chastognatha Family Amiskwidae, new family Genus Amiskwia, new genus Ainiskwia sagittiformis, new species Class Chaetopoda Sub-Class Polychaeta Order Miskoa, new order Family Miskoidae new family Genus Miskoia, new genus Miskoia preciosa, new species Family Aysheaidse, new family Genus Aysheaia, new genus Aysheaia pedimculata, new species Family Canadidae, new family Genus Canadia, new genus Canadia spinosa, new species , Canadia setigera, new species Canadia sparsa, new species Canadia dubia, new species Canadia irregularis, new species Genus Selkirkia, new genus Selkirkia major (Walcott) Selkirkia fragilis, new species Selkirkia gracilis, new species Family Wiwaxidce, new family Genus IViwaxia. new genus JViwaxia corrugata (Matthew) Genus Pollingeria, new genus Pollingeria grandis, new species Genus Worthenella, new genus Worthenella cambria, new species Smithsonian Miscellaneous Collections, Vol. 57, No. 5 109 no SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 Class Gephyrea—Quatrefages 127 Family Ottoidse, new family 128 Genus Ottoia, new genus 1 28 Ottoia prolifica, new species 128 Ottoia minor, new species 129 Ottoia tenuis, new species •. 130 Genus BanfUa, new genus 1 30 Banffia constricta, new species 130 Family Pikaidas, new family 131 Genus Pikaia, new- genus 131 Pikaia gracilens, new species 132 Genus Oesia, new genus 132 Oesia disjuncta, new species 133 ILLUSTRATIONS PAGE Plate 18.
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