Semi-formal association of scientists worldwide who have an interest in living or fossil nannoplankton - including coccolithophores, nannoliths, and other nannofossils such as silicoflagellates and calcispheres.

An interdisciplinary, international organization of research scientists studying living and fossil Ostracoda.

NAMS promotes all aspects of micropaleontology through application, research and education dealing with morphology, biostratigraphy, ecology/paleoecology, and geologic history of all groups of microfossils occurring in the stratigraphic record.

Founded for the purpose of publishing results of research on Foraminiferida and allied organisms.

Organization of micropaleontology workers in the UK. Formerly the British Micropalaeontological Society.

An international association of palaeontologists and stratigraphers with a common interest in the study of conodonts.