The members of the group are international leaders in the Cambrian and Devonian Systems, as attested by the fact that Prof. Gozalo is a Full Member (with voting rights) of the International Subcommissions on Cambrian Stratigraphy and Prof. Valenzuela is the Vice-Chairman of the International Subcommission on Devonian Stratigraphy (SDS). In addition, Dr. Liao is a Corresponding Member of the latter Subcommission (SDS).

Another aspect that manifests this leadership is the recent organisation of a triple International Congress at the University of Valencia in which all members of the Group participated, Prof. Valenzuela being the President of the Congress and Dr. Liao the Secretary General.

Last but not least, the members have participated in the elaboration of synthesis papers of the respective Cambrian and Devonian systems in prestigious journals and books.