Palaeocopid and Podocopid Ostracoda from the Lexington Limestone and Clays Ferry Formation (Middle and Upper Ordovician) of Central Kent~cky GEOLOGICAL SURVEY PROFESSIONAL PAPER 1066-H Prepared in cooperation with the Commonwealth of Kentucky, University of Kentucky, Kentucky Geological Survey Palaeocopid and Podocopid Ostracoda from the Lexington Limestone and Clays Ferry Formation (Middle and Upper Ordovician) of Central Kentucky By S.M. WARSHAUER and JEAN M. BERDAN CONTRIBUTIONS TO THE ORDOVICIAN PALEONTOLOGY OF KENTUCKY AND NEARBY STATES Edited by jOHN POJETA, jR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1066-H Prepared in cof!peration with the Commonwealth of Kentucky, University of Kentu~ky, Kentucky Geological Survey Descriptions an:d illustrations of 54 ostracode taxa, ~·ncluding 5 new generq and 18 new species, with discussions of their paleoecologic and stratigraphic significance UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON:1982 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress catalog-card No. 82-600570 For sale by the Distribution Branch, U.S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 CONTENTS Page Page Abstract -------------------------------------------- H1 Systematic Paleontology-Continued Order Palaeocopida-Continued Introduction ----------------------------------------- 1 Genus Saccelatia Kay, 1940 ---------------------- H51 Acknowledgements -------------------------------- 2 Genus Anisocyamus Martinsson, 1960 ______________ 52 Previous work ---------------------------------------- 2 Genus Leperditella Ulrich, 1894 ------------------- 52 Age and correlation ----------------------------------- 4 Genus Byrsolopsina Swain and Cornell, 1961________ 54 Paleoecology ----------------------------------------- 5 Genus Schmidtella Ulrich, 1892 ------------------- 54 List of localities --------------------------------------- 14 Genus Easchmidtella Schallreuter, 1967 ------------ 56 Systematic paleontology-------------------------------- 19 GenusLaccoprimita Ulrich and Bassler, 1923 ________ 57 Order Palaeocopida -------------------------------- 19 Genus Milleratia Swartz, 1936 -------------------- 61 Genus Quasibollia n. gen ------------------------- 19 Genus Uninodobolba n. gen ----------------------- 62 Genus Warthinia Spivey, 1939-------------------- 23 Genus Ectoprimitia Boucek, 1936 ----------------- 62 Genus Parenthatia Kay, 1940 --------------------- 26 Genus Ningulella n. gen ------------------------- 63 Genus Gephyropsis n. gen ------------------------ 27 Genus Pseudoprimitiella Warshauer, 1981 __________ 64 Genus Jonesella Ulrich, 1890 --------------------- 27 Genus Bolbopisthia Guber and Jaanusson, 1964 ______ 65 Genus Ballardina Harris, 1957 ------------------- 28 Genus A mericoncha Schallreuter, 1968 _____________ 66 Genus Ctenobolbina Ulrich, 1890 ------------------ 29 Genus Cryptophyllus Levinson, 1951_______________ 67 Genus Ceratopsis Ulrich, 1894 -------------------- 32 Order Podocopida ---------------------------------- 68 Genus Dicranella Ulrich, 1894 -------------------- 45 Genus Phelobythocypris n. gen -------------------- 68 Genus Eurychilina Ulrich, 1889 ------------------- 46 Genus Shenandoia Kraft, 1962 -------------------- 69 Genus Cystomatochilina Jaanusson, 1957 ___________ 46 Genus Elliptocyprites Swain, 1962----------------- 70 Genus Platybolbina (Rimabolbina) Schallreuter, 1969 _ 47 Genus Silenis Neckaja, 1958 ---------------------- 70 Genus Hesperidella Opik, 1937-------------------- 48 Genus Krausella Ulrich, 1894 --------------------- 71 Genus Oepikella Thorslund, 1940 ---"--------------- 49 Genus Pseudorayella Neckaja, 1960 ---------------- 71 Genus Macronotella Ulrich, 1894 ------------------ 49 Genus Reversocypris P~ibyl, 1955 ----------------- 71 Genus Aparchites Jones, 1889 -------------------- 49 References cited -------------------------------------- 72 Genus Brevidorsa Neckaja, 1973 ------------------ 50 Index ----------------------------------------------- 77 ILLUSTRATIONS [Plates follow index] PLATE 1. Quasibollia and Warthinia. 2. Parenthatia and Warthinia. 3. Ballardina, Gephyropsis, and Jonesella. 4. Ctenobolbina. 5. Ceratopsis and Hastatellina?. 6, 7. Ceratopsis. 8. Ceratopsis? and Ceratopsis. 9. Hesperidella?, Dicranella, Dicranella?, Platybolbina (Rimabolbina), Apatochilina, Cystomatochilina, Eurychilina. 10. Macronotella?, Saccelatia, Hyperchilarina, Oepikella, "Aparchites," Brevidorsa. 11. Leperditella?, Anisocyamus, Anisocyamus?, and Leperditella 12. Byrsolopsina?, Easchmidtella, and Schmidtella. 13. Laccoprimitia. 14. Milleratia, Laccoprimitia, Ectoprimitia?, and Uninodobolba. 15. Ningulella and Pseudoprimitiella?. 16. Bolbopisthia and Cystomatochilina. 17. Cryptophyllus, Eridoconcha, and A mericoncha. 18. Shenandoia?, Elliptocyprites, Phelobythocypris, and Silenis. 19. Reversocypris?, Pseudorayella, and Krausella. III IV CONTENTS Page FIGURE 1. Generalized map of central Kentucky showing Ordovician ostracode localities used in this study-------------------- H3 2. Q-mode dendrogram showing the relationship of the 44 quantitatively defined collections to one another------------- 9 3-10. Histogram of common genera in: 3. Cluster A ----------------------------------------------------------------------------------- 10 4. Cluster B ----------------------------------------------------------------------------------- 11 5. Cluster C ~---------------------------------------------------------------------------------- 12 6. Cluster D ----------------------------------------------------------------------------------- 13 7. Cluster E ----------------------------------------------------------------------------------- 14 8. Cluster F ----------------------------------------------------------------------------------- 15 9. Cluster G ----------------------------------------------------------------------------------- 15 10. Cluster H ----------------------------------------------------------------------------------- 16 11. Histogram of the single collection in outlier I-------------------------------------------------------------- 17 12-20. Size-dispersion diagrams for specimens of: 12. Quasibollia persulcata ------------------------------------------------------------------------- 22 13. VVarthinia nodosa ---------------------------------------------------------------------------- 25 14. Ballardina millersburgia ---------------------------------------------------------------------- 30 15. Ctenobolbina ventrispinifera -------------------------------------------------------------------- 32 16. Ceratopsis intermedia, paralectotypes ------------------------------------------------------------ 37 38 ~~: g:~~~~~:~: ~~~~~~ah~~~~-=============================================================== 42 19. Ceratopsis intermedia and Ceratopsis asymmetrica ------------------------------------------------- 43 20. Laccoprimitia cryptomorphologica -------------------------------------------------------------- 60 TABLES Page TABLE 1. Ostracode taxa described in this paper and the stratigraphic units and the collections in which they occur------------------ H6 2. Lithologies of the ostracode-bearing stratigraphic units included in this study---------------------------------------- 8 3. Measurements of 17 specimens of Quasibollia persulcata -------------------------------------------------------- 21 4. Statistical summary of measurements for Quasibollia persulcata -------------------------------------------------- 22 5. Measurements of 48 specimens of VVarthinia nodosa ------------------------------------------------------------ 24 6. Statistical summary of measurements for VVarthinia nodosa ----------------------------------------------------- 25 7-9. Measurements of: 7. Sixteen specimens of Parenthatia sadievillensis --------------------------------------------------------- 26 8. Eleven specimens of Jonesella gonyloba ---------------------------------------------------------------- 28 9. Thirteen specimens of Ballardina millersburgia -------------------------------------------------------- 29 10. Statistical summary of measurements for Ballardina millersburgia ----------------------------------------------- 29 11. Measurements of 4 7 carapaces of Ctenobolbina ventrispinifera ---------------------------------------------------- 31 12. Statistical summary of measurements for Ctenobolbina ventrispinifera --------------------------------------------- 31 13. Statistical summary of measurements for the lectotype and paralectotypes of Ceratopsis intermedia --------------------- 36 14. Measurements of 22 unfigured hypotypes of Ceratopsis intermedia ------------------------------------------------ 37 15. Statistical summary of measurements for Ceratopsis intermedia -------------------------------------------------- 37 16. Measurements of 83 specimens of Ceratopsis asymmetrica ------------------------------------------------------- 40 17. Statistical summary of measurements for Ceratopsis asymmetrica ------------------------------------------------ 41 18-22. Measurements of: 18. Six specimens of Brevidorsa strodescreekensis ----------------------------~----------------------------- 50 19. Three specimens of Leperditella sp. aff. L. tumida ------------------------------------------------------- 52 20. Eight specimens of Schmidtella brevis----------------------------------------------------------------- 55 21. Twenty specimens of Laccoprimitia rudis -------------------------------------------------------------