Braarudosphaera bigelowii
| Braarudosphaera bigelowii Temporal range: | |
|---|---|
| Scientific classification | |
| Domain: | |
| (unranked): | |
| Class: | Prymnesiophyceae |
| Order: | Coccosphaerales |
| Family: | Braarudosphaeraceae |
| Genus: | Braarudosphaera |
| Species: | B. bigelowii |
| Binomial name | |
| Braarudosphaera bigelowii (Gran & Braarud) Deflandre | |
Braarudosphaera bigelowii is a coastal coccolithophore in the fossil record going back 100 million years. The family Braarudosphaeraceae consist of single-celled coastal phytoplanktonic algae with calcareous scales with five-fold symmetry, called pentaliths. With 12 sides, it has a regular dodecahedral structure, approximately 10 micrometers across.
B. bigelowii is reported to have formed an endosymbiotic relationship with UCYN-A2, which allows B. bigelowii to fix nitrogen and convert it into compounds useful for cell growth.
The genus name Braarudosphaera is in honour of Trygve Braarud (1903–1985), who was a Norwegian botanist. He specialized in marine biology, and was affiliated with the University of Oslo.
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