palynomorph

A palynomorph is a microscopic fossil, typically composed of pollen or spores. The study of these microfossils, along with other microscopic planktonic organisms, is called palynology.12

Palynology is a branch of paleobotany and is closely related to the plant and geologic sciences, including stratigraphy, historical geology, and paleontology. These microscopic fossils are valuable because they are produced in large numbers, dispersed widely by wind and water, and are resistant to decay. This makes them useful for determining the age of sedimentary rocks, especially when larger fossils are absent. Palynological analysis is also important in petroleum exploration, as microfossils can help determine the depositional environment and age of subsurface rocks.234