Palynomorph is the geological term used to describe a particle of a size between five and 500 micrometers, found in rock deposits (sedimentary rocks) and composed of organic material such as chitin, pseudochitin and sporopollenin. The word is derived from Greek, meaning "strewn or sprinkled forms." Palynology is the study of palynomorph fossils and can be considered a subdiscipline of micropaleontology or paleobotany. Expressed more simply, palynology is the study of organic microfossils.