Microscopic structures of varying shape and size that are made of calcite, are secreted by calcareous nannoplankton, and are found in marine deposits from the Triassic period to the Recent. Coccoliths range in size from one to thirty-five microns.
Microscopic structures of varying shape and size that are made of calcite, are secreted by calcareous nannoplankton, and are found in marine deposits from the Triassic period to the Recent. Coccoliths range in size from one to thirty-five micrometers in size.
Calcareous skeletons of microscopic, single celled, photosynthesising algae called coccolithophores.
microscopic calcite platelets formed by microscopic algae. Main component of chalk.