TY - RPRT TI - Tropical shoreline ice in the late Cambrian: Implications for earth's climate between the Cambrian Explosion and the Great Ordovician Biodiversification Event AU - Anthony C. Runkel AU - T.J. MacKey AU - Clinton A. Cowan AU - David L. Fox PY - 2010 DO - 10.1130/gsatg84a.1 UR - https://pubs.usgs.gov/publication/70037640 ID - 70037640 ER -