Noun Acritarch Definition and Examples
Definition:
1.noun
Any hollow unicellular organic microfossil which is not otherwise categorized or classified.
noun, Paleontology.
1.
any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.
Origin:
1960s. From ancient Greek ἄκριτος undistinguishable, doubtful + -arch.
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