Parechelus is an extinct genus of prehistoric bony fish that lived during the Ypresian. The genus was circumscribed by Edgard Casier in 1967 for his description of P. parechelus.
Pronotacanthus sahelalmae is an extinct spiny eel that lived in marine environments of what is now Lebanon during the Santonian.
Elopopsis is an extinct genus of prehistoric bony fish that lived from the Cenomanian to Campanian.
Salminops is an extinct genus of prehistoric bony fish that lived during the Cenomanian known from USA and Portugal.
Casierius is an extinct genus of marine ray-finned fish that lived during the Albian stage of the Early Cretaceous epoch. It was a relative of the modern bonefish in the extinct family Phyllodontidae, although some authorities consider it either a true albulid or a very early eel. It contains a single species, C. heckeli, known from the Glen Rose Formation near Hood County, Texas.
Oligopleurus is an extinct genus of prehistoric bony fish that lived during the Kimmeridgian stage of the Late Jurassic epoch.
Lompoquia retropes is an extinct genus of ray-finned fishes belonging to the family Sciaenidae, the drums. These fishes lived what is now Southern California during the Upper Miocene subepoch.
Anguilloides is an extinct genus of prehistoric marine eel that lived in the early Eocene. It contains a single species, A. branchiostegalis. Fossils are known from the famous Monte Bolca site of Italy.
Mylomyrus is an extinct genus of prehistoric bony fish that lived from the early to middle Eocene Epoch.
Euthynotus is an extinct genus of prehistoric bony fish that lived during the early Toarcian stage of the Early Jurassic epoch. It is generally considered the basalmost pachycormiform.
Rhamphognathus is an extinct genus of prehistoric bony fish that lived from the early to middle Eocene.
Dalpiazella is an extinct genus of prehistoric marine eel from the Eocene of Europe. It contains a single species, D. brevicauda, from the late Ypresian-aged Monte Bolca lagerstatten of Italy. It is though to be closely related to the sympatric genus Paranguilla, with both genera together constituting the family Paranguillidae.
Urenchelys is an extinct genus of prehistoric bony fish. This genus is interesting as comprising the oldest known eels, which differ from all the tertiary and existing eels in still retaining the caudal fin.
Holopterygius is an extinct genus of prehistoric eel-like coelacanth known from the Devonian (Givetian–Frasnian) of Germany. Despite its specialized morphology and superficial dissimilarity to the usual Paleozoic coelacanth body plan, it is one of the most basal actinistian fish.
Naxilepis is an extinct genus of prehistoric bony fish.
Orvikuina is an extinct genus of prehistoric bony fish.
Osorioichthys is an extinct genus of prehistoric bony fish.
Parapholidophorus is an extinct genus of prehistoric bony fish.
Tarasiiformes is an extinct order of prehistoric ray-finned fish.
Kelliaichthys is an extinct genus of prehistoric bony fish that lived during the Cisuralian epoch in what is now East Kazakhstan, Kazakhstan. It was originally named "Kellia" by Kazantseva-Selezneva (1980). Because this genus name was already given to an extant lasaeid bivalve, the new name Kelliaichthys was erected for the Permian fish. The genus includes a single species (monotypy): Kelliaichthys velox.
