Acritarchs are organic microfossils, known from the Archean eon of the Precambrian to the present. The classification is a catch all term used to refer to any organic microfossils that cannot be assig

Vernanimalcula guizhouena is an acritarch dating from 600 to 580 million years ago; it was between 0.1 and 0.2 mm across. Vernanimalcula means "small spring animal", referring to its appearance in the