The following is a list of organizations that have regularly participated with corporate membership.

China

Palaeontological Society of China

Czech Republic

Geological Institute AS CR

France

Association Paléontologique Française

France

The staff of Carnets de Géologie-Notebooks on Geology

India

Palaeontological Society of India

IRGO

International Research Group on Ostracoda

Italy

Societa Palaeontologica Italiana

Japan

Palaeontological Society of Japan

New Zealand

Royal Society of New Zealand

Poland

Polish Section of Palaeontologists

Spain

Sociedad Española de Paleontología

Switzerland

Société Paléontologique Suisse

United Kingdom

Micropalaeontological Society

United Kingdom

The Palaeontological Association

USA

Paleobotanical Section of the Botanical Society of America

USA

The Paleontological Society

USA

The Paleontological Society of Washington