[1] COLUMBIA UNIV,LAMONT DOHERTY GEOL OBSERV,PALISADES,NY 10964
[2] TEXAS A&M UNIV,COLLEGE STN,TX 77845
[3] LUND UNIV,S-22100 LUND,SWEDEN
[4] INST SCI EVOLUT,MONTPELLIER 5,FRANCE
[5] UNIV S CAROLINA,COLUMBIA,SC 29208
[6] UNIV S FLORIDA,ST PETERSBURG,FL 33701
[7] UNIV TEXAS,ARLINGTON,TX 76019
[8] UNIV LILLE,F-59655 VILLENEUVE DASCQ,FRANCE
[9] UNIV TORONTO,TORONTO,ON M5S 3B1,CANADA
[10] UNIV TEXAS,AUSTIN,TX 78759
[11] UNIV OXFORD,OXFORD OX1 3PR,ENGLAND
[12] UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064
[13] CHIBA UNIV,CHIBA 263,JAPAN
[14] LOUISIANA STATE UNIV,BATON ROUGE,LA 70803
[15] UNIV WESTERN AUSTRALIA,NEDLANDS,WA 6009,AUSTRALIA
[16] CUNY QUEENS COLL,FLUSHING,NY 11367
[17] UNIV NEWCASTLE UPON TYNE,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND
[18] GEOL SURVEY JAPAN,TSUKUBA,IBARAKI 305,JAPAN
[19] E CAROLINA STATE UNIV,GREENVILLE,NC 27858
[20] FREE UNIV AMSTERDAM,AMSTERDAM,NETHERLANDS
[21] UNIV COLOGNE,W-5000 COLOGNE,GERMANY
[22] UNIV FREIBURG,INST GEOL,D-79104 FREIBURG,GERMANY
[23] NEW JERSEY GEOL SURVEY,TRENTON,NJ 08625
[24] US GEOL SURVEY,RESTON,VA 22092
[25] US GEOL SURVEY,MENLO PK,CA 94025