A microscopic calcite skeletal dish that shields specific marine phytoplankton plus a fossilized condition forms chalk and limestone build up.
A microscopic skeletal plate of calcite at first glance of specific marine phytoplankton; it forms chalk and limestone whenever fossilized
original of min, calcareous figures, most likely veggie, often rich in deep-sea mud.
A minute round organic body, consisting of several concreted layers surrounding a clear center, found in profusion at great depths in the North Atlantic ocean embedded in matter resembling sarcode. It is probable that the coccoliths are unicellular algæ.
Harting has found that minute calcareous disks are separated out of a solution of lime sulphate or lime chlorid by the action of ammonia generated by the decomposition of organic matter, and therefore it has been inferred that the coccoliths may be separated from the sea-water whenever organic decomposition is in progress in the presence of lime sulphate.