Gemmactena
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| Gemmactena Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Ctenophora |
| Class: | †Scleroctenophora |
| Genus: | †Gemmactena |
| Species: | †G. actinala |
| Binomial name | |
| †Gemmactena actinala Ou et. al., 2015 | |
Gemmactena is an extinct genus of scleroctenophoran that lived during Cambrian Stage 3.