@inbook {7053,
	title = {The very last moment of the Paleozoic era},
	booktitle = {The Permian and Triassic systems and their mutual boundary},
	year = {1973},
	note = {reprint},
	pages = {1-10},
	publisher = {Canadian Society of Petrolium Geologists},
	organization = {Canadian Society of Petrolium Geologists},
	address = {Calgary},
	keywords = {geology, permian, permo-triassic boundary, triassic},
	author = {Newell, Norman D.},
	editor = {Logan, A. and Hills, L. V.}
}
@inbook {6021,
	title = {Invertebrate paleontology (excepting fusulinids and corals)},
	booktitle = {Upper Paleozoic of Peru},
	year = {1949},
	note = {DO NOT HAVEPls. 5-36No PterioideaUSNM Mollusk library},
	pages = {46-173},
	publisher = {USGS},
	organization = {USGS},
	address = {Fairbanks, AL},
	keywords = {bivalvia, fossil record, mollusca, permian},
	author = {Chronic, B. John},
	editor = {Newell, Norman D. and Chronic, B. John and Roberts, Thomas G.}
}
