Holdenius
| Holdenius Temporal range: Devonian | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Placodermi |
| Order: | Arthrodira |
| Family: | Dunkleosteidae |
| Genus: | Holdenius |
Holdenius is an extinct genus of placoderm fish which lived during the Devonian period.
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