Orthonectida
| Orthonectida | |
|---|---|
| Two different female Orthonectids | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| Clade: | ParaHoxozoa |
| Clade: | Bilateria |
| Clade: | Nephrozoa |
| Clade: | Protostomia |
| Clade: | Spiralia |
| Clade: | Platytrochozoa |
| (unranked): | Mesozoa |
| Phylum: | Orthonectida Giard, 1877 |
| Species | |
Orthonectida (/ˌɔːrθəˈnɛktɪdə, -θoʊ-/) is a small phylum of poorly known parasites of marine invertebrates that are among the simplest of multi-cellular organisms. Members of this phylum are known as orthonectids.