| Rhizodus Temporal range:
| |
|---|---|
| |
| Fossil tooth of Rhizodus hibberti | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Class: | †Rhizodontida |
| Order: | †Rhizodontiformes |
| Family: | †Rhizodontidae |
| Genus: | †Rhizodus Owen, 1840 |
| Type species | |
| †Rhizodus hibberti Owen, 1840
| |
| Other species | |
| |
Rhizodus (root tooth) is an extinct genus of basal, finned tetrapodomorphs (the group of sarcopterygians that contains modern tetrapods and their extinct relatives). It belonged to Rhizodontida, one of the earliest-diverging tetrapodomorph clades. Two valid species have been described, both of which lived during the Early Carboniferous epoch. The type species R. hibberti is known from the Viséan stage of the United Kingdom, whereas the species R. serpukhovensis is from the Serpukhovian of Russia. Some fossils referred to the genus Rhizodus have also been found in North America.[1][2]
- ^ Smirnova, A. Y. (2022). "A new species of rhizodontiform sarcopterygian fish (Sarcopterygii: Rhizodontiformes) from the Lower Carboniferous of the Moscow Region". Paleontological Journal. 56 (4): 431–440. doi:10.1134/S0031030122040128. S2CID 251519204.
- ^ Jeffery, J. E. (2012). "Cranial morphology of the Carboniferous rhizodontid Screbinodus ornatus (Osteichthyes: Sarcopterygii)". Journal of Systematic Palaeontology. 10 (3): 475–519. doi:10.1080/14772019.2011.595961. S2CID 84810001.