At: Great Basin Naturalist, 43, 3 By: Thayn G. F., Tidwell W. D., Stokes W. L.
journalAt: Great Basin Naturalist, 44, 2 By: Thayn G. F., Tidwell W. D.
journalAt: American Journal of Botany, 72, 2 By: Thayn G. F., Tidwell W. D., Stokes W. L.
journalAt: Southwestern Naturalist, 30, 4 By: Tidwell W. D., Thayn G. F.
journalAt: Bulletin of the British Museum (Natural History), Series, Geology, 5, 5 By: Chandler M. E. J.
journalAt: Bulletin of the United States Geological Survey, 163 By: Knowlton F. H.
journalAt: Bulletin of the United States Geological Survey, 98 By: White D.
journalAt: Biuletyn Instytutu Geologicznego, 282 By: Kotasowa A.
journalAt: Palaeontographica Canadiana, 10 By: McIver E. E., Basinger J. F.
journalAt: Memoir / Geological Survey, Canada, 293 By: Bell W. A.