Some OPAL libraries remain closed or are operating at reduced service levels. Materials from those libraries may not be requestable; requested items may take longer to arrive. Note that pickup procedures may differ between libraries. Please contact your library for new procedures, specific requests, or other assistance.
Your session will expire automatically in 0 seconds.
Paleobotany -- Kansas. : Two new plant genera of Pennsylvanian age from Kansas coal balls / by Sergius H. Mamay.
Paleobotany -- Kansas -- Cherokee County. : Corynepteris involucrata, sp. nov., a new fertile fern of possible zygopterid affinities from the Pennsylvanian of Kansas / Robert W. Baxter and R. William Baxendale.
Paleobotany -- Middle Atlantic States. : Stratigraphic distribution of some pollen types from the Campanian and lower Maestrichtian rocks (Upper Cretaceous) of the Middle Atlantic States / by Jack A. Wolfe.
Paleobotany -- Nevada. : Vegetation and climates of the last 45,000 years in the vicinity of the Nevada Test Site, south-central Nevada / by W. Geoffrey Spaulding; prepared in cooperation with the U.S. Department of Energy.
Paleobotany -- New Mexico -- Hidalgo County. : North American species of Tempskya and their stratigraphic significance / by Sidney R. Ash and Charles B. Read; with a section on stratigraphy and age of the Tempskya-bearing rocks of southern Hidalgo County, New Mexico, by Robert A. Zeller, Jr.