| Semionotus Temporal range: Late Triassic to Earliest Jurassic |
|
|---|---|
| fossils of S. bergeri | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Semionotiformes |
| Family: | Semionotidae |
| Genus: | Semionotus |
Semionotus ("Flag-Back") is an extinct genus of ray-finned fish found throughout Northern Pangaea (North America and Europe) during the late Triassic, becoming extinct in the Early Jurassic.
