DEVELOPMENT OF PALEOBOTANY IN THE ILLINOIS BASIN 55 



ARTIST, R. C, 1936, Stratigraphy and preliminary pollen analysis of a Lake County, (Pl,s) 

 Illinois, bog: Butler Univ. Bot. Studies, v. 3, Paper 13, p. I9I-I98. 



BAIN, H. P., 1931, The initiation of the State Geological Survey: Illinois Geol. 

 Survey Bull. 60, p. 29-33. 



BAKER, P. C, 1912, Postglacial life of Wilmette Bay, glacial Lake Chicago: Illi- (Pl,c) 

 nois Acad. Sci. Trans. (19H), v. 4, p. 108-116. 



BALBACH, M. K. , 1962, Observations on the ontogeny of Lepidocarpon : Am. Jour. (P,b,s) 

 Botany, v. 49, no. 9, P. 984-989. 



BALBACH, M. K. , 1965, Paleozoic lycopsid fructifications. 1. Lepidocarpon petri- (P,b,s) 

 factions: Am. Jour. Botany, v. 52, no. 4, p. 317-330. 



BALBACH, M. K. , 1966a, Paleozoic lycopsid fructifications. 2. Lepidostrobus takh- (P,b,s) 

 tajanii in North America and Great Britain: Am. Jour. Botany, v. 53, no. 

 3, p. 275-283. 



BALBACH, M. K. , 1966b, Microspore variation in Lepidostrobus and comparison with (P,b,s) 

 Lycospora : Micropaleontology, v. 12, no. 3, p. 334-342. 



BALBACH, M. K., 1967, Paleozoic lycopsid fructifications. 3. Conspecificity of (P,b,s) 

 British and North American Lepidostrobus petrifactions: Am. Jour. Botany, 

 v. 5^, no. 7, P. 867-875. 



BALL, C. G., 1932, Preliminary microscopic investigation of Illinois coal: Illinois 

 Acad. Sci. Trans. (1931), v. 24, no. 2, p. 327-330. 



BARGH00RN, E. S., 1953, Frederick Oliver Thompson: Harvard Univ. Bot. Mus. Leaflet, 

 v. 16, p. 173-178. 



BASTIN, E. S., 1940, Obituary - Roy Graham [1908-1939]: Science, v. 91, no. 2352, 

 p. 87-88. 



BATRA, L. R., R. H. SEGAL, and R. W. BAXTER, 1964, A new middle Pennsylvanian fossil (P,b) 

 fungus: Am. Jour. Botany, v. 51, no. 9, p. 991-995. 



BAXTER, R. W., 1948, A study of the vegetative anatomy of the genus Sphenophyllum (P,b) 

 from American coal balls: Missouri Bot. Garden Annals, v. 35 » no. 3, p. 

 209-232. 



BAXTER, R. W. , 1949* Some pteridosperm stems and fructifications with particular (P,b,s) 

 reference to the Medullosae: Missouri Bot. Garden Annals, v. 36, no. 3, 

 p. 287-352. 



BAXTER, R. W., I95O, Peltastrobus reedae : A new sphenopsid cone from the Pennsyl- (P,b,s) 

 vanian of Indiana: Bot. Gazette, v. 112, no. 2, p. 174-182. 



BAXTER, R. W., 1951a, Coal balls - new discoveries in plant petrifactions from Kan- (P,b) 

 sas coal beds: Kansas Acad. Sci. Trans., v. 54, no. 4, p. 526-535- 



BAXTER, R. W. , 1951b, Ankyropteris glabra , a new American species of the Zygopteri- (P,b) 

 daceae: Am. Jour. Botany, v. 38, no. 6, p. 440-452. 



BAXTER, R. W., 1952, The Coal Age flora of Kansas. [Part] 2. On the relationships (P,b) 

 among genera Etapteris , Scleropteris and Botrychioxylon : Am. Jour. Bota- 

 ny, v. 39, no. 4, p. 263-274. 



BAXTER, R. W., 1953, The Coal Age flora of Kansas. 3. Psaronius cooksonii : A new (P,b) 

 species showing Caulopteris features: Bot. Gazette, v. 115, no. 1, p. 35- 

 44. 



BAXTER, R. W., 1955, Palaeostachya andrewsii , a new species of calamitean cone from (P,b,s) 

 the American Carboniferous: Am. Jour. Botany, v. 42, no. 4, p. 342-351. 



BAXTER, R. W., i960, Sporocarpon and allied genera from the American Pennsylvanian: (P,b) 

 Phytomorphology, v. 10, no. 1, p. 19-25. 



