Micropaleontology is published online, with print as an added option, in six issues per year (including theme issues and monographs) containing peer-reviewed research on systematics, morphology, biology and ecology of animal, plant, and protist microfossils and their living representatives. Geological applications of micropaleontology, together with research in other stratigraphic subdisciplines, are published in the companion Stratigraphy.

Micropaleontology is available in BioOne Complete through the 2005 volume. Current content is available on the journal's website.