Hemiphragma (bryozoan)
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| Hemiphragma Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Bryozoa |
| Class: | Stenolaemata |
| Order: | †Trepostomida |
| Family: | †Dittoporidae |
| Genus: | †Hemiphragma Ulrich, 1893 |
Hemiphragma is an extinct genus of Middle Ordovician bryozoan. It had branching colonies with thick-walled zooecial apertures and lots of acanthopores, but few mesopores.[1]