DISTRIBUTION OF PALEOZOIC OSTRACODES 



773 



only a few species are Aechminella (L, M)J 

 Binodella (M), Burlella (U), Harltonella 

 (L), and Kellettella (U). 



Permian. — Many genera originate in the 

 Pennsylvanian and continue into the Per- 

 mian, namely, Bairdianella, Basslerella, Et- 

 lipsella, Kelletina, Knightina, Off a, and 

 Roundyella.^ Diagnostic Permian genera are 

 Haworthina, Suchonella, Suchonellina, To- 

 miella, and Whippiella.^ All except the first 

 and last are known only from Russia. 



REFERENCES 



Agnew, Allen F., 1942, Bibliographic index of 



new genera and families of Paleozoic Ostracoda 



since 1934: Jour. Paleontology, vol. 16, pp. 756- 



763. 

 Arkell, W. J. and Moy-Thomas, J. A., 1940, 



Paleontology and the taxonomic problem: The 



New Systematics, pp. 395-410, Oxford. 

 Baird, W., 1850, The natural history of the 



British Entomostraca, 364 pp., 36 pis. 

 Bassler, R. S., 1913, in Zittel's Textbook of 



Paleontology, adapted and edited by Chas. R. 



Eastman, pp. 735-742, figs. 1324-1436, 



London. 

 Bassler, R. S. and Kellett, Betty, 1934, 



Bibliographic index of Paleozoic Ostracoda: 



Geol. Soc. America, Spec. Paper 1, 

 BouaEK, B., 1936, Die Ostracoden des bohm- 



ischen Ludlows: Neues Jahrb., Beilage-Band 



76, Abt. B, pp. 31-98. 

 Brady, G. S., and Norman, A. M., 1889, Roy. 



Soc. Dublin, Trans., ser. 2, vol. 4, pp. 61-270. 

 Cooper, Chalmer L., 1941, Chester ostracodes 



of Illinois: Illinois State Geol. Survey, Kept. 



Inv. 77, 101 pp., 14 pi. 

 Croneis, Carey, 1939, Taxonomy of Chester 



ostracodes: Denison Univ., Sci. Lab. Bull., 



vol. 34, p. 32. 

 Dana, James D., Manual of Geology, editions 



of 1863, 1866, 1874, 1880, 1895. 

 Kellett, Betty, 1936, Carboniferous ostra- 

 codes: Jour. Paleontology, vol. 10, pp. 769-784. 

 Latrielle, 1802, Histories naturelle generale et 



particuliere des Crustacea, 1801, Paris. 



' L — Lower, M — Middle, U — Upper Pennsyl- 

 vanian. 



* May have a Devonian species, but none is 

 known from the Mississippian. 



' May be equivalent to Basslerella, common in 

 the fresh water beds of the Pennsylvanian of 

 Illinois and the Pennsylvanian and Permian of 

 Kansas. 



/^^^ OBtLL Sh 



Sumner qrqup 



Fig. 7. — Section showing the ostracode hori- 

 zons in the formations and members of the Chase 

 and Council Grove groups of the Permian of 

 Kansas (Section after Moore, 1936). 



^5?? Oars Sm 



ADMIRE GROUP 



