Gonatodus is an extinct genus of freshwater ray-finned fish that lived in Europe during the Viséan stage of the Mississippian epoch. It is a member of the potentially paraphyletic family Gonatodidae.
The following species are known:
†G. punctatus (Agassiz, 1835) (type species) - Visean of Scotland (Strathclyde Group, including Gullane Formation) (=Amblypterus punctatus Agassiz, 1835) †G. macrolepis Traquair, 1877 - Visean of Scotland (Limestone Coal Formation) †G. parvidens Traquair, 1882 - Visean of Scotland (Limestone Coal Formation) ?†G. toilliezi de Koninck, 1878 - (Visean of Belgium)
The alleged species G. brainerdi Newberry, 1889 is known from the Famennian of Ohio, US. However, it is almost certainly not a member of this genus.
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