Ionoscopiformes

Heterolepidotus is an extinct genus of prehistoric ray-finned fish.

Ophiopsis is an extinct genus of prehistoric ray-finned fish belonging to the family Ophiopsidae. Specimens are known from the Tithonian-age Solnhofen Formation of Bavaria, Germany.

Ophiopsiella is an extinct genus of prehistoric ray-finned fish.

Ionoscopiformes is an extinct order of largely marine, ray-finned fish generally considered to be the sister group to Amiiformes, an order that contains the modern Bowfin. The earliest members of the order are found in Middle Triassic deposits in all continents besides Australia and Antarctica, showing that the group was very widespread even during this time. They would continue to diversify throughout the Jurassic and Cretaceous with the youngest records of the group being during the Albian. The order has had a complicated taxonomic history since the 2010s with authors suggesting that the gro

genus of fishes (fossil)

Asialepidotus is an extinct genus of prehistoric marine ray-finned fish that lived during the Ladinian stage of the Middle Triassic epoch. It contains a single species, A. shingyiensis, from Guizhou, China.