Reports Dealing with the Systematic Geology and Paleontology of Maryland., Band 1

Acad Academy of Natural Agassiz alaeformis Aldrich Amer aperture Aquia Creek AQUIA FORMATION argillaceous Bagg body whorl Bull Chickasawan Circ Clifton Beach Collection.-Maryland Geological Survey Conrad convex Corbula Crassatellites Cretaceous d'Orbigny Description Eocene Eocene deposits Exterior of right Figs Fort Washington fossils Genus glauconitic greensand Heilprin Johns Hopkins Univ Johns Hopkins University Jour Leda left valve Length Liverpool Point Lucina margin Maryland Geological Survey Mason Springs Middle Atlantic Slope mile southeast miles above Popes miles below Potomac Miocene Nanjemoy Creek Nodosaria northeast of Piscataway Occurrence.-AQUIA FORMATION Occurrence.-NANJEMOY FORMATION Ostrea compressirostra Paspotansa Pecten Phila Philadelphia Academy Plate Polymorphina Popes Creek Port Tobacco posterior Potapaco Potomac Creek potomacensis Proc right valve Seat Pleasant septa Shell South River southeast of Mason species strata substage surface teeth Tertiary Thecachampsa Turritella Turritella mortoni U. S. Geol Ulrich Upper Marlboro Venericardia Virginia width Woodstock Zone zooecia