| Protaspididae Temporal range: Silurian - Devonian |
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|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Heterostraci |
| Order: | Pteraspidiformes |
| Family: | Protaspididae |
The Protaspididae are an extinct marine family of fish-like vertebrates. The protaspidids existed in the early Devonian period, representing a transitional form between the Pteraspididae and the Psammosteida, bearing the broad head shield shape of the latter, due to a more benthic (bottom-dwelling) existence.