| Protoscaphirhynchus Temporal range:
| |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Acipenseriformes |
| Family: | Acipenseridae |
| Genus: | †Protoscaphirhynchus Wilimovsky, 1956 |
| Species: | †P. squamosus
|
| Binomial name | |
| †Protoscaphirhynchus squamosus Wilimovsky, 1956
| |
Protoscaphirhynchus squamosus is an extinct sturgeon from the Late Cretaceous of North America. It is known from a single poorly preserved specimen found in the Maastrichtian aged Hell Creek Formation in Montana. Due to its poor preservational state, it has few diagnostic characters.[1]
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