@article {2612,
	title = {Eocene faunas from the Department of Bolivar, Colombia},
	journal = {Geological Society of America Memoir},
	volume = {16},
	year = {1946},
	pages = {1-126},
	keywords = {Bolivar, Colombia, Eocene},
	author = {Clark, B.L. and Durham, J.W.}
}
@article {3942,
	title = {The geology and paleontology of the type section of the Meganos Formation (lower middle Eocene) of California},
	journal = {University of California Publications Bulletin of the Department of Geological Sciences},
	volume = {17},
	year = {1927},
	pages = {63-142},
	keywords = {California, Eocene, Meganos Formation},
	author = {Clark, B.L. and Woodford, A.O.}
}
@article {3450,
	title = {The San Lorenzo series of Middle California},
	journal = {University of California Publications in Geology},
	volume = {11},
	year = {1918},
	pages = {45-234},
	keywords = {California, Oligocene, San Lorenzo Series},
	author = {Clark, B.L.}
}
