''Ainia'' is an extinct genus of prehistoric ray-finned fish that lived during the Kimmeridgian stage of the Late Jurassic epoch. It contains a single species, ''A. armata'', known from the famous Solnhofen Limestone of Germany. It is a distant relative of the

bowfin The bowfin (''Amia calva'') is a bony fish, native to North America. Common names include mudfish, mud pike, dogfish, grindle, grinnel, swamp trout, and choupique. It is regarded as a relict, being the sole surviving species of the Halecomorphi ...

, although it is more closely related to genera such as ''

Caturus ''Caturus'' (from el, κατω , 'down' and el, οὐρά 'tail') is an extinct genus of fishes in the family Caturidae in the order Amiiformes, related to modern bowfin. Fossils of this genus range from 200 to 109 mya. It has been suggested ...

'' and ''

Osteorachis ''Osteorachis'' is an extinct genus of prehistoric ray-finned fish. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organiz ...

''.

References

Ionoscopiformes Monotypic prehistoric ray-finned fish genera Late Jurassic bony fish Solnhofen fauna Kimmeridgian genera Late Jurassic fish of Europe Taxa named by David Starr Jordan {{Jurassic-fish-stub Fossil taxa described in 1919