Table 1. Participating institutions and laboratory PIs.

Institution	Laboratory PI
Arizona State University	Knudson
California State University, Chico	Bartelink
Free University, Amsterdam	Laffoon
Max Planck Institute	Richards
Northern Arizona University	Kellner
Notre Dame University	Schurr
Oxford University	Hedges
University of California, San Diego	Schoeninger
University of California, Santa Cruz	Koch
University of Cincinnati	Crowley
University of Florida	Krigbaum
University of Idaho	Kohn
University of Illinois, Chicago	Pestle
University of Illinois, Urbana	Ambrose/Fort
University of Miami	Pestle
University of Munich	Grupe
University of Rochester	Higgins
University of South Florida	Tykot
University of Tübingen	Bocherens
University of Utah	Cerling
University of Wyoming	Martínez del Rio