Statistics for HYDROZOA Owen, 1843
| Phyla | 0 |
|---|---|
| Classes | 1 |
| Orders | 6 |
| Families | 71 |
| Genera | 214 |
| Subgenera | 0 |
| Genus synonyms | 261 |
| Species | 615 |
| Subspecies | 5 |
| Species synonyms | 897 |
| Incertae sedis | 0 |
| Species inquirenda | 0 |
| Aggregate genera | 0 |
| Aggregate species | 0 |
| Unplaced | 0 |
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