Argentina: Dr M.O. Mancenido, Division Paleozoologia Invertebrados, Facultad de Ciencias Naturales y Museo, Paseo del Bosque, 1900 La Plata, Argentina.

Australia: Currently Vacant

Canada: Prof RK Pickerill, Dept of Geology, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.

China: Dr Zhou Zhonge, IVPP, PO Box 643, Beijing 100044, PR China.

France: Dr J Vannier. Centre des Sciences de la Terre, 69622 Villeurbanne, Universite Claude Bernard Lyon 1, 43 Blvd 11 Nov 1918, France.

Germany: Prof FT Fursich, GeoZentrum Nordbayern der Universität Erlangen, Loewenichstrasse 28, D 91054 Erlangen, Germany.

Iberia: Prof F Alvarez, Departimento de Geologia, Universidad de Oviedo, C/Jesus Arias de Velasco, 33005 Oviedo, Iberia, Spain.

Japan: Currently Vacant

New Zealand: Dr RA Cooper, NZ Geological Survey, PO Box 30368, Lower Hutt, New Zealand.

USA: Professor P.A.Selden, Paleontological Institute, University of Kansas, Lindley Hall, 1475 Jayhawk Boulevard, Lawrence, KS 66045, USA. Prof NM Savage, Dept of Geology, University of Oregon, Eugene, Oregon 97403, USA. Prof MA Wilson, Dept of Geology, College of Wooster, Wooster, Ohio 44691, USA.