Pleurochrysis (chromalveolate)
''Pleurochrysis'' is a genus of haptophytes. It includes the species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... '' Pleurochrysis carterae'', '' Pleurochrysis dentata'', '' Pleurochrysis elongata'', '' Pleurochrysis gayraliae'', '' Pleurochrysis haptonemofera'', '' Pleurochrysis placolithoides'', '' Pleurochrysis pseudoroscoffensis'', '' Pleurochrysis roscoffensis'' and '' Pleurochrysis scherffelii''. References Haptophyte genera {{Haptophyte-stub ...
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Eukaryota
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard archaea. This implies that there are only two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as flagellated phagotrophs. Their name comes from the Greek εὖ (''eu'', "well" or "good") and κάρυον (''karyon'', "nut" or "kernel"). E ...
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