Some fossils referred to the genus Rhizodus have also been found in North America.

[1][2] The most notable characteristics of Rhizodus, compared to other giant rhizodonts such as Barameda, were the two 22-centimetre (8.7 in) fangs located near the front of its jaws,[3] followed by other teeth scaling downwards in size.

Rhizodus was a giant apex predator that resided in freshwater lakes, river systems and large swamps, with R. hibberti measuring 5.14–5.63 metres (16.9–18.5 ft) long[4] and weighing 1–1.5 metric tons (1.1–1.7 short tons).

[6] Fossil skin imprints show that Rhizodus had large, plate-like scales, similar to those found on modern day arapaima.

It has been proposed that Rhizodus lunged at terrestrial, shorebound prey, just like a modern-day crocodile.