Letognathus
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| Letognathus Temporal range: Early Carboniferous | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Class: | †Rhizodontida |
| Order: | †Rhizodontiformes |
| Family: | †Rhizodontidae |
| Genus: | †Letognathus Brazeau, 2005 |
| Type species | |
| Letognathus hardingi (Dawson, 1868) | |
| Synonyms | |
| |
Letognathus is a genus of rhizodont tetrapodomorph that lived during the Carboniferous period.[1] Its remains come from the Blue Beach Member of the Horton Bluff Formation, near Hantsport, Nova Scotia. Like most rhizodonts, it was of relatively large size, had a large recurved fang at the symphysis of the lower jaw, and a row of three coronoid fangs along the length of the jaw in addition to its marginal dentition. Letognathus is important for rhizodont systematics because it retains a number of primitive features, such as ossified Meckel's cartilage, are not found in the genera Rhizodus and Strepsodus.
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