TY - RPRT TI - The potential of paleozoic nonmarine trace fossils for paleoecological interpretations AU - C.G. Maples AU - A.W. Archer PY - 1989 DO - 10.1016/0031-0182(89)90003-5 UR - https://pubs.usgs.gov/publication/70015480 ID - 70015480 ER -