Eotrigonodon


Eotrigonodon is a dubious form genus of ray-finned fish known from the Cretaceous to the Eocene. It is known only from isolated teeth. Formerly considered an early genus of tetraodontiform fish in the family "Eotrigonodontidae", more recent studies indicate that they likely represent the pharyngeal teeth of pycnodonts, which are an unrelated, entirely extinct group of fish. In addition, it may itself be a junior synonym for Stephanodus, another taxon based on pycnodont teeth. Yet other authors retain the genus as taxonomically unresolved.
The following species are known:
Indeterminate remains are known from the Cenomanian of Brazil, the Late Paleocene of Mali, and the Lutetian of Ukraine.