TY - BOOK ID - 137265587 TI - North American species of Tempskya and their stratigraphic significance AU - Ash, Sidney R. AU - Read, C. B. AU - Zeller, Robert A. AU - Geological Survey (U.S.) PY - 1976 PB - Washington : United States Department of the Interior, Geological Survey, DB - UniCat KW - Paleobotany KW - Paleobotany KW - Ferns, Fossil. KW - Geology, Stratigraphic KW - From 65 to 140 million years ago KW - New Mexico UR - https://www.unicat.be/uniCat?func=search&query=sysid:137265587 AB - ER -