Maryland Geological Survey creator Swartz, Charles Kephart 1861- Prouty, William F. (William Frederick) 1879-1949 Ulrich, Edward Oscar 1857-1944 Bassler, Ray S. (Ray Smith) 1878- text mdu Baltimore The Johns Hopkins press 1923 monographic eng

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794 p. illus., LXVII pl. (incl. fold. col. map; fold. col. diagr.) maps, tables. 26 cm. Geologic relations and geographic distribution of the Silurian strata of Maryland, by C.K. Swartz.--Stratigraphic and paleontologic relations of the Silurian strata of Maryland, by C.K. Swartz.--Sections of the Rose Hill and McKenzie formations, by W.F. Prouty and C.K. Swartz.--Sections of the Wills Creek and Tonoloway formations, by C.K. Swartz.--Correlation of the Silurian formations of Maryland with those of other areas, by C.K. Swartz.--American Silurian formations, by E.O. Ulrich and R.S. Bassler.--Paleozoic ostracoda: their morphology, classification, and occurences, by E.O. Ulrich and R.S. Bassler.--Systematic paleontology of Silurian deposits, by C.K. Swartz, W.F. Prouty, E.O. Ulrich and R.S. Bassler. At head of title: Maryland Geological survey. n-us-md Geology Maryland Paleontology Maryland Geology, Stratigraphic Silurian Paleontology Silurian QE121 .A215 vol. 8 gs 23000260 U.S. Geol. Survey. Libr./ICU 870529 20260227111327.0 gs 23000260