01773cam a22003131 4500 gs 23000260 DLC 20260227111327.0 870529s1923 mduabf 000 0 eng c gs 23000260 U.S. Geol. Survey. Libr./ICU ICU ICU DLC n-us-md QE121 .A215 vol. 8 QE661 .M35 Maryland Geological Survey. Silurian. Baltimore, The Johns Hopkins press, 1923. 794 p. illus., LXVII pl. (incl. fold. col. map; fold. col. diagr.) maps, tables. 26 cm. At head of title: Maryland Geological survey. 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. Geology Maryland. Paleontology Maryland. Geology, Stratigraphic Silurian. Paleontology Silurian. Swartz, Charles Kephart, 1861- Prouty, William F. (William Frederick), 1879-1949. Ulrich, Edward Oscar, 1857-1944. Bassler, Ray S. (Ray Smith), 1878- 26267 26267