Age of Early Cretacous palynomorphs in the Muirkirk clay pit fossil locality (Prince Georges County, Md.)
By: by Eleanora I. Robbins.
Series: U.S. Geological Survey open-file report -- 91-613.
Publisher: U.S. Geological Survey; Books and Open-File Reports Section, distributor
Published: 1991
Place of publication: [Reston, Va.]; [Denver, Colo
Language: eng
Format: Microform
Subjects: Paleobotany -- Maryland -- Prince George's County.; Paleobotany -- Cretaceous.; Palynology -- Maryland -- Prince George's County.
Notes: Title from cover.

Shipping list no.: 92-2538-M.

"December 1991"

Includes bibliographical references (leaf 5).

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1992] 1 microfiche : negative.