Associazione Pisana Scienze Naturali - Italian paleontological society.

Blomidon Naturalist's Society - Field naturalists club centered around the eastern Annapolis Valley of Nova Scotia.

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.

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.

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