Special thanks are due Jim Bourdon for helping with web page design; Dr. Gordon Hubbell for providing the C. taurus jaws used in this study; David J. Ward, Mikael Siverson, David Wells, Joan Karrie, Amanda and Laura Cunningham (my wife and daughter), Dr. Robert Weems, Gary Grimsley, Dr. Bretton Kent, Dr. Shelton Applegate, Robert Purdy, Jeff Helmers, Gordon Rush, Richard Grier, Jr., Mike Folmer and fellow members of the Maryland Geological Society for lively discussion.

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