Nematodinium
| Nematodinium | |
|---|---|
| Light micrograph of a Nematodinium with a double arrow pointing to the ocelloid | |
| Scientific classification | |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | Sar |
| Clade: | Alveolata |
| Phylum: | Dinoflagellata |
| Class: | Dinophyceae |
| Order: | Gymnodiniales |
| Family: | Warnowiaceae |
| Genus: | Nematodinium Kofoid & Swezy, 1921 |
| Type species | |
| Nematodinium partitum Kofoid & Swezy, 1921 | |
Nematodinium is a genus of athecate marine dinoflagellates. Roughly ovoid in shape, their defining characteristic is the presence of nematocysts, from which their name is derived. They are part of the Warnowiacaea family that are famous for the ocelloid, an eye-like organelle that responds to light.