Undina is a genus of prehistoric coelacanth, lobe-finned fish, which lived from the Triassic period to the Cretaceous period (Only ranges Sinemurian to Tithonian according to 2021 study).
Species Undina acutidens Reis, 1888 Undina barroviensis Undina gulo (synonym: Holophagus gulo) (type species) Undina penicillata (Munster) Undina? picena (Costa, 1862) Undina purbeckensis
Distribution Species of this genus have been found in Cretaceous of Spain, in Jurassic of Germany, Turkey and the United Kingdom and in Triassic of Italy.
References
The Paleobiology Database Paul H. LAMBERS redescription of the coelacanth Macropoma willemoesii VETTER from the lithographic limestone of Solnhofen (Upper Jurassic, Bavaria) Solnhofen