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Tom L. Phillips Mahaffy, James Francis 2015-09-28T15:23:00Z 2015-09-28T15:23:00Z 10000-01-01 1999 1999 Miospore distribution patterns suggest differences in some ecological requirements of their source plants. One of the major tree-fern miospores, Thymospora, shows a pattern different than some of the other tree-fern miospores, especially at Sahara where it rises to second in abundance in the top zone at 29%. Thymospora is less abundant (less than 16%) in the two most complete profiles from Old Ben, but at both localities shows less rapid changes in abundance than two other Psaronius miospores. Perhaps the tree fern that produced Thymospora occupied less disturbed sites. Made available in DSpace on 2015-09-28T15:23:00Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9921712.pdf: 5450346 bytes, checksum: c4b69a29c2af04836d7bc7312db02d28 (MD5) Previous issue date: 1999 Embargo set by: Seth Robbins for item 88350 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 211 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999. http://hdl.handle.net/2142/87069 (MiAaPQ)AAI9921712 eng Geology Vegetational Patterns in the Herrin and Springfield Coals (Middle Pennsylvanian of Illinois), Based on Miospore Profiles With Comparison to Coal-Ball Patterns text Plant Biology Plant Biology University of Illinois at Urbana-Champaign Dissertation Ph.D.