microfossil

mi·cro·fos·sil

M0273550 (mī′krō-fŏs′əl)n. A fossil, as of a pollen grain or unicellular organism, that is too small to study with the naked eye.

microfossil

(ˈmaɪkrəʊˌfɒsəl) n (Palaeontology) a fossil generally less than 0.5 millimetre in size, such as a protozoan, bacterium, or pollen grain

mi•cro•fos•sil

(ˌmaɪ kroʊˈfɒs ɪl)

n. a fossil so small that it can be studied and identified only with a microscope. [1920–25]

Thesaurus

Noun

1.

microfossil - a fossil that must be studied microscopicallyfossil - the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil