Pteronisculus

Pteronisculus is an extinct genus of prehistoric bony fish that lived during the Early Triassic and Middle Triassic epochs of the Triassic period. The preoccupied genus name "Glaucolepis" Stensiö, 1921 (non "Glaucolepis" Braun, 1917) is a synonym of "Pteronisculus" White, 1933.
"Pteronisculus" was originally referred to the family Palaeoniscidae, but was removed due to differences to "Palaeoniscum". Based on similarities with "Turseodus" it was provisionally included in Turseoidae. A synapomorphy of "Pteronisculus" and "Turseodus" is the tooth-bearing lachrymal.
"Pteronisculus" had a wide geographic range during the Early Triassic. Fossils were collected in Greenland, Madagascar, Spitsbergen and the United States (possibly also British Columbia). From the Middle Triassic, it is only known from South China. Its occurrence in the Permian of South Africa has been questioned. About 12 species have been described to date, ranging from to in length.