Doliodus
| Doliodus Temporal range: | |
|---|---|
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| The holotype tooth of Doliodus, originally Diplodus problematicus, in the collection of the Natural History Museum, London | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | Omalodontiformes (?) |
| Family: | Omalodontidae (?) |
| Genus: | Doliodus Traquair (1893) |
| Type species | |
| Ctenacanthus latispinosus? Whiteaves, 1881 | |
| Synonyms | |
Doliodus is an extinct genus of cartilaginous fish known from the Early Devonian period of what is now New Brunswick, Canada. It includes a single named species, referred to either as D. problematicus or D. latispinosus, which was originally described based on isolated teeth and fin spines, but has since had a well-preserved body fossil assigned. The classification of the genus is uncertain, but it has been considered a member of the order Omalodontiformes. A more complete specimen that some authors assign to the genus shows features that are transitional between the extinct acanthodians and cartilaginous fish.