The Palaeontological Association (U.K.) - The interests of members of the Association encompass all aspects of palaeontology, including macropalaeontology, micropalaeontology, palaeobotany, vertebrate palaeontology, palaeoecology, and biostratigraphy.

Paleontological Institute of Russian Academy of Sciencies (PIN) - The University of California Museum of Paleontology has set up a long-term cooperative agreement with the Paleontological Institute, one which has resulted in several mutual visits, student exchanges and cooperative projects, and this website.

Riversleigh Society - Provides access to institutions, researchers, information, resources, information, ideas and latest news in palaeontology, palaeobotany, palynology and palaeogeography in Australia.

Associazione Pisana Scienze Naturali - Italian paleontological society.

The Grzybowski Foundation - An international scientific foundation that associates itself with the Geological Society of Poland, and promotes education and research in the field of micropalaeontology.