Opsithrissops is an extinct genus of prehistoric bony fish that lived during the Thanetian stage of the Paleocene epoch. It is a small 100 centimetres (3.3 ft) nektonic opportunistic carnivore in the family Osteoglossiformes which includes other bony-tongues such as the extant species of Arowana and Arapaima. It hunted small invertebrates and fish similarly to today's trout and became a Paleogene keystone species in many habitats before its disappearance from the fossil record.
Orthurus is an extinct genus of prehistoric bony fish that lived during the Carnian stage of the Late Triassic epoch.
Devonosteus is an extinct genus of prehistoric sarcopterygian or lobe-finned fish.
Muranjilepis is an extinct genus of prehistoric sarcopterygians or lobe-finned fish.
Aglyptorhynchus is an extinct genus of prehistoric bony fish.
Brychaetus is an extinct genus of prehistoric bony tongue known from the Late Cretaceous to the Paleocene. It contains a single species, Brychaetus muelleri Its fossils have been found in Europe, North America, and northern Africa. This freshwater fish had very long, blunt teeth.
Cylindracanthus is an extinct genus of Cretaceous ray-finned fish.
Sphyraenodus is an extinct genus of prehistoric bony fish.
Gyrolepis is an extinct genus of prehistoric bony fish.
Eotrigonodon is an extinct genus of prehistoric bony fish.
Eutrichiurides is an extinct genus of prehistoric cutlass fish.
Graphiuricthys is an extinct genus of prehistoric bony fish.
Litoptychius is an extinct genus of prehistoric bony fish.
Notagogus is an extinct genus of prehistoric bony fish. They can be found in the Solnhofen Plattenkalk.
Macrosemius is an extinct genus of prehistoric bony fish.
Paralbula is an extinct genus of prehistoric bony fish. They can be found in the Hell Creek Formation, in Montana, United States.
Pleuropholis is an extinct genus of prehistoric bony fish.
Platysiagum is an extinct genus of prehistoric bony fish.
Gebrayelichthyidae is a family of extinct pycnodontid fish, with a superficially shrimpfish-like appearance that lived during the lower Cenomanian.
Ohmdenia is an extinct genus of prehistoric bony fish that lived from the Toarcian stage of the Early Jurassic epoch. Ohmdenia was first described in 1953 by B. Hauff, based on a fossil found in the well-known schists at Posidonia in Holzmaden, Germany. For a long time this animal has been considered a close relative of Birgeria, a great predator typical of the Triassic period with an uncertain systematic position. Further studies have shown similarities with the pachicormiforms, a group of neopolitics considered close to the origin of teleosts and also including giant forms and planctives. Some studies have erroneously indicated Ohmdenia as a synonym of Saurostomus, other studies have instead placed Ohmdenia as an important evolutionary passage between the basal pachicormiforms and the more derived planktivore pachicormiformes.
