| Calkinsia | |
|---|---|
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| Scientific classification | |
| Domain: | |
| (unranked): | |
| Division: | |
| Class: | Postgaardea[1] |
| Order: | Postgaardida |
| Family: | Calkinsiidae Cavalier-Smith 2016 |
| Genus: | Calkinsia Lackey 1960 non Nieuwland 1916 |
| Species | |
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Calkinsia is amonotypic genus of excavates comprising the single speciesCalkinsia aurea.[2] It lives in low-oxygen seafloor environments.[1][3] It is not classified in any of the three well-known groups of the Euglenozoa (Kinetoplastida,Euglenida orDiplonemida), but is placed in its own group, the Symbiontida (along with some DNA sequences which were found in marine environments but not identified with known organisms).[1][4][5] Some authors have classifiedCalkinsia alongsidePostgaardi, butPostgaardi has not been studied well enough to test this hypothesis.[1]
The genus name ofCalkinsia is in honour ofGary Nathan Calkins (1869 – 1943), who was an Americanprotozoologist and a professor atColumbia University. He wrote several landmark textbooks on the biology of the protozoa.[6]
