Western Interior Paleontological Society (WIPS) - Society has monthly meetings, organized activities, and field trips.

SEPM - Society for sedimentary geology.

American Association of Paleontological Suppliers - Professional association of commercial fossil and mineral collectors and preparators.

NSS Paleontology Section - National Speleological Society organization for cavers interested in paleontology.

The Evolution of Terrestrial Ecosystems (ETE) - Formed by a group of professional researchers in paleontology to oversee all aspects of the ETE Database, a computerized database for research in evolutionary paleoecology.

The Paleobiological Fund - Paleobiological and paleontological research and education funding.

Paleontological Research Institute (PRI) - PRI's website includes a number of educational sections. The society publishes "American Paleontologist" and is located in Ithica, New York.

Willi Hennig Society - Society of cladisticians, publishes the journal "Cladistics"