Page:Walcott Cambrian Geology and Paleontology II.djvu/175

From Wikisource
Jump to navigation Jump to search
This page has been proofread, but needs to be validated.

CAMBRIAN GEOLOGY AND PALEONTOLOGY

II

No. 5.—MIDDLE CAMBRIAN ANNELIDS

By CHARLES D. WALCOTT

(With Six Plates)


CONTENTS

PAGE
Introduction 110
Cambrian annelids 111
Classification 111
Relations to living annelids 111
Descriptions
Class Chætognatha 112
Family Amiskwidæ, new family 112
Genus Amiskwia, new genus 112
Amiskwia sagittiformis, new species 112
Class Chætopoda 113
Sub-Class Polychæta 113
Order Miskoa, new order 113
Family Miskoidæ new family 113
Genus Miskoia, new genus 114
Miskoia preciosa, new species 114
Family Aysheaidæ, new family 116
Genus Aysheaia, new genus 116
Aysheaia pedunculata, new species 117
Family Canadidæ, new family 117
Genus Canadia, new genus 118
Canadia spinosa, new species 118
Canadia setigera, new species 119
Canadia sparsa, new species 119
Canadia dubia, new species 119
Canadia irregularis, new species 120
Genus Selkirkia, new genus 120
Selkirkia major (Walcott) 120
Selkirkia fragilis, new species 122
Selkirkia gracilis, new species 122
Family Wiwaxidæ, new family 123
Genus Wiwaxia, new genus 123
Wiwaxia corrugata (Matthew) 123
Genus Pollingeria, new genus 124
Pollingeria grandis, new species 125
Genus Worthenella, new genus 125
Worthenella cambria, new species 126

Smithsonian Miscellaneous Collections, Vol. 57, No. 5

109