Holoptychius
| Holoptychius Temporal range: Late Devonian-Mississippian ~ | |
|---|---|
| Fossil of H. quebecensis in the Field Museum of Natural History, Chicago | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Class: | Porolepimorpha |
| Order: | †Porolepiformes |
| Family: | †Holoptychiidae |
| Genus: | †Holoptychius Agassiz 1839 |
| Type species | |
| Holoptychius nobilissimus | |
| Species | |
| |
Holoptychius (from Greek: όλος holos, 'whole' and Greek: πτυχή ptyche 'fold') is an extinct genus of porolepiform lobe-finned fish from the Middle Devonian to Carboniferous (Mississippian) periods. It is known from fossils worldwide. The genus was first described by Louis Agassiz in 1839.
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