| Thalassiosirales | |
|---|---|
| | |
| Stephanodiscus hantzschii | |
| Scientific classification | |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | Sar |
| Clade: | Stramenopiles |
| Phylum: | Gyrista |
| Subphylum: | Ochrophytina |
| Class: | Bacillariophyceae |
| Subclass: | Coscinodiscophycidae |
| Superorder: | Thalassiosiranae |
| Order: | Thalassiosirales Glezer & Makarova, 1986 |
| Families | |
Thalassiosirales is an order of centric diatoms. As of 2015, the order contained 471 species. [1] Species in the order Thalassiosirales are common in brackish, nearshore, and open-ocean habitats, with approximately the same number of freshwater and marine species. [2]
The Thalassiosirales species Thalassiosira pseudonana was chosen as the first eukaryotic marine phytoplankton for whole genome sequencing. [3] T. pseudonana was selected for this study because it is a model for diatom physiology studies, belongs to a genus widely distributed throughout the world's oceans, and has a relatively small genome at 34 mega base pairs. Scientists are researching on diatom light absorption, using the marine diatom Thalassiosira.