Rhizodus
Encyclopedia
Rhizodus is an extinct genus of a rhizodont
Rhizodont
Rhizodonts are an extinct group of predatory lobe-finned fishes. They are known from many areas of the world from the Givetian through to the Pennsylvanian - the earliest known species is about 377 Ma, the latest around 310 Ma. Rhizodonts lived in tropical rivers and freshwater lakes and were the...

, a branch of the Sarcopterygii
Sarcopterygii
The Sarcopterygii or lobe-finned fishes – sometimes considered synonymous with Crossopterygii constitute a clade of the bony fishes, though a strict classification would include the terrestrial vertebrates...

, the bony vertebrate clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...

 that also includes tetrapods.
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