International Fossil Algae Association
- Non-profit organization interested in promoting the study of fossil algae. General information on the association activities, past and future, a library and photo galleries.
- http://www.ku.edu/~ifaa/

International Organisation of Palaeobotany
- Group manages the plant fossil database.
- http://iop.biodiversity.org.uk/

American Association of Stratigraphic Palynologists (AASP)
- Established in 1967 to promote the science of palynology. Publishes the journal Palynology (annually), the AASP Newsletter (quarterly), and the AASP Contributions Series (mostly monographs, issued irregularly), as well as several books and miscellaneous
- http://www.palynology.org/

WWU Münster
- The Palaeobotanical Research Group of this German university. Research mainly involves Palaeozoic and early Mesozoic flora.
- http://www.uni-muenster.de/GeoPalaeontologie/Palaeo/Palbot/ebot.html

Paleobotanical Section of the Botanical Society of America
- Containing information on awards, meetings and announcements, publications, reports, and personalia of the Section.
- http://www.dartmouth.edu/~daghlian/paleo/index.html

International Federation of Palynological Societies
- The International Federation of Palynological Societies (IFPS) is a federation of regional, national, linguistic, and specialist palynological organizations of the world. Its goals are to advance knowledge in palynology and related subjects by promotion o
- http://geo.arizona.edu/palynology/ifps.html