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Coccolithales is an order of Haptophyceae. [1] The Coccolithales has long been considered one of only two orders in the Coccolithophyceae, the other order being the Isochrysidales. [2] [3]
There are two main types of coccoliths, heterococcoliths and holococcoliths. Heterococcoliths are formed of a radial array of elaborately shaped crystal units. Holococcoliths are formed of minute (~0.1 micrometre) calcite rhombohedra, arranged in continuous arrays.
Coccolithophores, or coccolithophorids, are single-celled organisms which are part of the phytoplankton, the autotrophic (self-feeding) component of the plankton community.
Coccolithales is an order of Haptophyceae. The Coccolithales has long been considered one of only two orders in the Coccolithophyceae, the other order being the Isochrysidales. (Source: Wikipedia, '', http://en.wikipedia.org/wiki/Coccolithales, CC BY-SA 3.0 .
Coccolithophores occupy a special position within the marine phytoplankton because of their production of intricate calcite scales, or coccoliths. Coccolithophores are major contributors to global ocean calcification and long-term carbon fluxes.
Coccolithophores are marine unicellular haptophytes that possess calcified scales called coccoliths. They are classified primarily on the morphology and crystallography of the coccoliths.
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Young & Bown (1997) noted that two major structural types occurred in this group and divided it into two families, the Coccolithaceae and Calcidiscaceae, which they then included in their revised order Coccosphaerales. Following Jordan et al. (2004), the correct name for this order is Coccolithales.
