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.
fossils referred to the genus Rhizodus have also been found in North America. The most notable characteristics of Rhizodus, compared to other giant rhizodonts...
predators of their age. They reached huge sizes - the largest known species, Rhizodus hibberti from Europe and North America, was an estimated 7 m in length...
lobe-finned fishes are extinct. The largest known lobe-finned fish was Rhizodus hibberti from the Carboniferous period of Scotland which may have exceeded...
Romer (1963) showed that the tooth of an animal that J. S. Newberry named "Rhizodus lancifer," from the Diamond Coal Mine, a Carboniferous site in Linton,...
large eugeneodontid fish that possessed two tooth whorls in its mouth Rhizodus was a large freshwater Rhizodont sarcopterygian from Europe and North America...
Carboniferous, 377–310 Ma. They reached huge sizes. The largest known species, Rhizodus hibberti grew up to 7 metres in length, making it the largest freshwater...
Megapiranha, red bellied piranha, Helicoprion, Dunkleosteus, white sturgeon, Rhizodus, saltwater crocodile Wade calls on the same instincts he uses to catch...
weigh up to 110 kg (240 lb). The largest lobe-finned fish of all time was Rhizodus at up to 7 m (23 ft). Lungfish (Dipnoi) The largest lungfish, the African...
also the largest lobe-finned fish was the 5.63–7 m (18.5–23.0 ft) long Rhizodus. Another large rhizodonts were Strepsodus with estimated length around...
Letognathus was originally assigned to Rhizodus in the mid 1800s and later to Strepsodus. This includes the species Rhizodus (now Letognathus) hardingi of Dawson...
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