Polypodium hydriforme
| Polypodium hydriforme | |
|---|---|
| Two specimens of free-living Polypodium | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Subphylum: | Endocnidozoa |
| Class: | Polypodiozoa Raikova, 1988 |
| Order: | Polypodiidea Poche, 1914 |
| Family: | Polypodiidae Poche, 1914 |
| Genus: | Polypodium Ussov, 1885 |
| Species: | P. hydriforme
|
| Binomial name | |
| Polypodium hydriforme (Ussov, 1885)
| |
Polypodium hydriforme is a species of Cnidarian that parasitizes in the eggs of sturgeon and similar fishes (Acipenseridae and Polyodontidae). It is one of few animals that lives inside the cells of other animals. P. hydriforme is the only species in the class Polypodiozoa.