Page:Walcott Cambrian Geology and Paleontology II.djvu/333

INDEX

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Note.—The first reference to each of the species described gives the page upon which the description begins and the figure references. References to the description of certain parts or features of a species are as a rule only given in the index if the description occurs outside of the detailed description of the species. For instance: the description of the pygidium of a certain species will be found in the description of that species and there will be no specific reference in the index to the pygidium unless it is described or discussed at some other point in the paper.

The references in heavy-faced type refer to the pages upon which the species are described.

			PAGE
Acidaspis, compared with Marrella (footnote)			162
Aglaspidæ Clarke			200
	classification of		155
	Emeraldella referred to		203
	possible relation of trilobite to		163
Aglaspina, new order, described			199
	classification of		155
	derived from Trilobita		163
	foreshadowed by Burgess shale fauna		165
	relation to Limulava		164
Aglaspis, representing Merostomata			155
Agnostus, compared with Mollisonia			196
	mentioned	149, 151
alata, see Odaraia.
Algonkian, genera that occur in			155
Alimentary canal, species preserving			160
Amiella, characterized			158
	representing Merostomata		155
	mentioned		148
Amiskwia sagittiformis, stratigraphic position and association			152
Ampullaria, ancestors of			166
Analysis, chemical, of slate			150
Anomalocaris, abdominal segments of,			159
	Whiteaves	154, 180
Anomalocaris canadensis Whiteaves, associated with Mollisonia symmetrica			197
	compared with Anomalocaris gigantea		180
Anomalocaris gigantea, new species		180, pl. 34, fig. 3
	compared with Anomalocaris canadensis Whiteaves		180
	stratigraphic position and association		153
Anostraca Calman			166
	classification of		154