[1] Amer Museum Nat Hist, Dept Vertebrate Paleontol, New York, NY 10024 USA
[2] Univ Oregon, Dept Anthropol, Eugene, OR 97403 USA
[3] CUNY Brooklyn Coll, Dept Anthropol & Archaeol, Brooklyn, NY 11210 USA
[4] Univ Calif Davis, Dept Comp Sci, Inst Data Analysis & Visualization, Davis, CA 95616 USA