''Isadia'' is an extinct genus of prehistoric freshwater
ray-finned fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...
from the order
Eurynotoidiformes. It is known from the
Permian
The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...
of
European Russia
European Russia is the western and most populated part of the Russia, Russian Federation. It is geographically situated in Europe, as opposed to the country's sparsely populated and vastly larger eastern part, Siberia, which is situated in Asia ...
.
The genus ''Amblypterina'' is partially considered a junior synonym of both ''Isadia'' and ''
Kichkassia''.
The following species are known:
* ''I. arefievi''
Minikh et al. 2015
* ''I. aristoviensis''
Minikh, 1990 (syn: ''Amblypterina grandicostata'')
* ''I. suchonensis''
(Minikh, 1986) (syn: ''Amblypterina pectinata'')
See also
*
Prehistoric fish
__NOTOC__
Prehistoric fish are early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Quaternary. The study of prehistoric fish is ...
*
List of prehistoric bony fish
This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ...
References
{{Palaeonisciformes-stub
Permian fish of Europe
Fossils of Russia
Prehistoric ray-finned fish genera
Fossil taxa described in 1990