Calcitarchs, formal group name Calcitarcha, are hollow, essentially spherical, calcareous walled microfossils of unknown taxonomic affinity, ranging in size from around 60–500 microns, although some smaller forms are also known. The term was erected by G.J.M. Versteegh et al.
Calcitarchs, formal group name Calcitarcha, are hollow, essentially spherical, calcareous walled microfossils of unknown taxonomic affinity, ranging in size from around 60–500 microns, although some smaller forms are also known. The term was erected by G.J.M. Versteegh et al.
Source: Wikipedia "Calcitarch" · CC BY-SA 4.0
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