Suggested citation and version history for:

  Powell, C.L., II, 2008, Pliocene invertebrates from the 
       Travertine Point outcrop of the Imperial Formation, 
       Imperial County, California:  U.S. Geological Survey 
       Scientific Investigations Report 2008-5155, 25 p. 
       [http://pubs.usgs.gov/sir/2008/5155/].


  December 18, 2008

  Initial release online at
  http://pubs.usgs.gov/sir/2008/5155/