@book {6381,
	title = {North American index fossils},
	volume = {1. Protozoa, Porifera, Hydrozoa, Anthozoa, Bryozoa, Brachiopoda, Pelecypoda, Scaphopoda and Gastropoda},
	year = {Submitted},
	note = {PDF},
	pages = {viii+853},
	publisher = {A.G. Seiler \& Company},
	organization = {A.G. Seiler \& Company},
	address = {New York},
	keywords = {actinodesma, ambonychia, bivalvia, cornellites, leiopteria, leptodesma, limopteria, loxopteria, mollusca, pterinea, Pterineidae, pterioidea},
	author = {Grabau, Amadeus W. and Shimer, Hervey Woodburn}
}
