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Palynological studies of Pennsylvanian coals and associated strata from eastern Kentucky have resulted in establishing of range zones of numerous taxa. Some of these taxa have restricted range zones that are useful in correlation studies of coals in the Princess reserve district. The coal nomenclature is, in part, peculiar to this district, corresponding neither to that used to the north and east in Ohio and West Virginia nor to that of other coal reserve districts in eastern Kentucky. Correlations of some of these coals with those in other areas have been proposed by several authors. These correlations are, for the most part, based on stratigraphic intervals measured from marker horizons or are based on geologic mapping. The coals under consideration are the Princess No. 5 through the Brush Creek(?) coal. This interval extends from the upper Breathitt Formation to the lower Conemaugh Formation. Samples of the Princess Nos. 5-7 coals were obtained from a diamond-drill core. Outcrop samples of the Princess No.6 through the Brush Creek(?) coals were also used. Within the interval of the Princess No. 5 through the Brush Creek(?) coals, several major palynological events occur. These include the diminution and extinction of Densosporites, the peak occurrence of Torispora, and the entire range zones of Laevigatosporites pseudothiessenii and Schopfites dimorphus. Zosterosporites is a new fossil spore genus and is described from seat-rock samples of the Princess No. 5B coal. The Princess No. 5 coal from the Webbville 1 core hole is less than 10 inches thick, but, palynologically, it is similar in part to the Richardson and Skyline coals. The Princess Nos. 6 and 7 coals of northeastern Kentucky are correlated with the Lower and Middle Kittanning coals of Ohio and . Pennsylvania. The Lower KittanningPrincess No. 6 coal is similar palynologically to the Colchester (No. 2) coal of Illinois. The Middle Kittanning-Princess No. 7 coal may be as old as the Springfield (No. 5) coal or may be somewhat younger and related to the Briar Hill (No. 5A) coal of Illinois, if differences in abundance ratios are not regarded as important. INTRODUCTION The Princess reserve district, as reported by Ferm (1963), is located in the northern part of the eastern Kentucky coal field within the highly dissected Kanawha section of the Appalachian Plateau province. This district is bordered by Ohio to the north and by West Virginia to the east, and Grayson, Ky., is near the middle of the district. Boyd, Carter, Greenup, and Lawrence Counties and the eastern part of Lewis County are within the district, an area of about 1,350 square miles (fig. 1). The district name comes from the small mining community of Princess, in northwestern Boyd County. Samples for this investigation were obtained from the Webbville 1 diamond-drill hole,. which is near the center of Webbville quadrangle, southeast of Grayson in Lawrence County, about 3 miles east of Webbville, Ky. The ·stratigraphic position of these samples with respect to each other is thus assured, and they are utilized as a reference set of samples. The samples investigated are from the Princess Nos. 5, 5A, 5B, 6, and 7 coals, together' with those from the associated roof and seat rock. A second set of samples was collected from the south side of the roadcut of Interstate 64 in Rush quadrangle about 2,000 feet south of Coalton, or just 2V2 miles north-northeast of Rush, Ky. The roadcut samples include the Princess Nos. 6 and 7 coals, together with three badly weathered younger coals. PREVIOUS WORK Palynological investigations of the coals of the stratigraphic interval under consideration have been intensively studied in the United States by several individuals. A few of these people are Schopf(1938), Kosanke (1947, 1950, 1964), Schemel (1951), Guennel (1952, 1958), Winslow (1959), Habib (1966), Gray (1967), Gray and Taylor (1967), and Peppers (1970). Because of these investigations very few new taxa remain to be described, although the usual emendations and new combinations are to be expected. One new taxon, Zosterosporites triangularis is described in this report. Z. triangularis is known from the roof rock of the Princess No. 5 coal and from the seat rock of the Princess No. 5B coal in the Princess reserve district of Kentucky. ACKNOWLEDGMENTS Don E. Wolcott assisted in the collection of the Princess samples, W. F. Outerbridge and E. C. Jenkins collected the Richardson coal samples, Charles L. Rice collected the ·Skyline coal samples, Norma L. Noble prepared the samples, and Wendell A. Martz took some of the photomicrographs used in this paper. This help is gratefully acknowledged. SAMPLE LOCALITIES AND PREPARATION Sixty-two samples of coal, roof rock, partings, and seat rock were collected and prepared for palynological investigation. All samples were collected in as similar a manner as possible. Core samples were cut with a carborundum saw so that a continuous ribbon of coal was obtained for maceration. Similarly, all outcrop samples were 2 PALYNOLOGICAL STUDIES OF COALS, PRINCESS RESERVE DISTRICT, KENTUCKY

Palynological studies of the coals of the Princess Reserve District in northeastern Kentucky