TY - RPRT TI - Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands AU - H. J. Falcon-Lang AU - W.J. Nelson AU - S. Elrick AU - C.V. Looy AU - P.R. Ames AU - William A. DiMichele PY - 2009 DO - 10.1130/g30117a.1 UR - https://pubs.usgs.gov/publication/70037247 ID - 70037247 ER -