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Baker, P. C, 194-5, The molluscan family Planorbidae (with collation, revision and additions 



by Harley Jones Van Cleave): Urbana: Univ. 111., xxxiv+53 p., 14 1 figs. 

 Berry, E. G. , 194-3, The Amnicolidae of Michigan: distribution, ecology, and taxonomy: Univ. 



Michigan, Misc. Publ. Zoology, no. 57, 68 p. 

 Boycott, A. E., 1936, Habits of freshwater mollusca in Britain: Jour. Animal Ecol., v. 5, 



p. 116-186. 

 Burch, J. B. , 1972, Freshwater sphaericean clams (Mollusca: Pelecypoda) of North America. Biota 



of freshwater ecosystems: Identification Manual No. 3: U.S. Govt. Print. Off., Washington, 



DC, 31 p., 34 figs. 

 Coleman, D. D., 1974, Illinois State Geological Survey Radiocarbon Dates V.: Radiocarbon, 



v. 16, no. 1, p. 105-117. 

 Dexter, R. W., 1950, Distribution of the mollusks in a basic bog and its margins: Nautilus, 



v. 64, p. 19-26. 

 Prye, J. C, A. B. Leonard, H. B. Willman, and H. D. Glass, 1972, Geology and paleontology of 



late Pleistocene Lake Saline, southeastern Illinois: Illinois Geol. Survey Circ. 471, 



44 p., 3 figs., 3 tables. 

 Herrington, H. B. , 1962, A revision of the Sphaeriidae of North America (Mollusca: Pelecypoda): 



Misc. Publ. Mus. Zool. Univ. Michigan, no. Il8, 74 p., 7 pis., 2 figs. 

 Hubendick, B. , 1951, Recent Lymnaeidae, their variation, morphology, taxonomy and distribution: 



Kgl. Svenska Vetenskapasakad, Handl., v. 3, 223 p., ill. 

 Hunter, W. R., 1964, Physiological aspects of ecology in non-marine molluscs, _in Wilbur, K. M. , 



and C. M. Yonge, Physiology of mollusca, pt. 1: New York, London: Academic Press, p. 83-116, ill, 

 La Rocque, Aurele, 1952, Molluscan faunas of the Orleton mastodon site, Madison County, Ohio: 



Ohio Jour. Sci., v. 52, p. 10-27. 

 La Rocque, Aurele, 1966, Pleistocene mollusca of Ohio: Ohio Div. Geol. Surv. Bull. 62, pt . 1 



(General), 112 p., 2 figs. 

 La Rocque, Aurele, 1967, Pleistocene mollusca of Ohio: Ohio Div. Geol. Surv. Bull. 62, pt. 2 



(Pelecypoda), p. 113-356, 8 pis., 206 figs. 

 La Rocque, Aurele, 1968, Pleistocene mollusca of Ohio: Ohio Div. Geol. Surv. Bull. 62, pt. 3 



(aquatic Gastropoda), p. 357-554, 6 pis., 200 figs. 

 La Rocque, Aurele, 1970, Pleistocene mollusca of Ohio: Ohio Div. Geol. Surv. Bull. 62, pt. 4 



(terrestrial Gastropoda), p. 554-800, 4 pis., 175 figs., index. 

 Leonard, A. B. , 1953, Molluscan faunas in Wisconsinan loess at Cleveland, Ohio: Amer. Jour. 



Sci. , v. 251, p. 369-376. 

 Leonard, A. B. , and J. C. Prye, i960, Wisconsinan molluscan faunas of the Illinois Valley region: 



Illinois Geol. Survey Circ. 304, 32 p., 4 pis., 3 figs., 11 geol. sec. 

 Leonard, A. B. , J. C. Prye, and W. H. Johnson, 1971, Illinoian and Kansan molluscan faunas of 



Illinois: Illinois Geol. Survey Circ. 46l, 23 p., 4 figs., appen. 

 McComas, M. R., J. P. Kempton, and K. C. Hinkley, 1972, Geology, soils, and hydrogeology of Volo 



Bog and vicinity, Lake County, Illinois: Illinois Geol. Survey Environmental Geology Note 57, 



27 p. , 9 figs. , 2 tables. 

 Morrison, J. P. E., 1932, A report of the mollusca of the Northeastern Wisconsin Lake District: 



Trans. Wisconsin Acad. Sci., Arts, and Letters, v. 27, p. 359-396. 

 Odhner, N. Hj., Mollusca: Pisidium conventus Clessin, _in Holtedahl, Olaf, ed., Report of the 



Scientific Results of the Norwegian Expedition to Novaya Zemlya 1921, I, no. 6, p. 1-6. 

 Pilsbry, H. A., 1948, Land Mollusca North America: Acad. Nat. Sci. Philadelphia Monog. No. 3, 



v. 2, pt. 2, p. i-xxxix, 521-1113, figs. 282-585. 

 Reynolds, M. B., 1959, Pleistocene molluscan faunas of the Humboldt deposit, Ross County, Ohio: 



Ohio Jour. Sci., v. 59, no. 3, p. 152-166, 6 figs., 2 tables. 

 Willman, H. B. , and J. C. Prye, 1970, Pleistocene stratigraphy of Illinois: Illinois Geol. 



Survey Bull. 94, 204 p., 3 pis. (in pocket), 14 figs., 7 tables. 

 Willman, H. B. , A. B. Leonard, and J. C. Frye, 1971, Farmdalian lake deposits and faunas in 



northern Illinois: Illinois Geol. Survey Circ. 467, 12 p. 

 Zimmerman, J. A., i960, Pleistocene molluscan faunas of the Newell Lake deposit, Logan County, 



Ohio: Ohio Jour. Sci., v. 60, p. 10-39, 19 figs. 



