''Cryptolepis'' is an extinct genus of prehistoric marine

lobe-finned fish Sarcopterygii (; )—sometimes considered synonymous with Crossopterygii ()—is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe-finned fish. These vertebrates ar ...

known from the

Late Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago ( Ma), to the beginning of the succeeding ...

of what is now eastern Europe. It contains a single species, ''C. grossi'' from the middle to late

Famennian The Famennian is the later of two faunal stages in the Late Devonian epoch. The most recent estimate for its duration is that it lasted from around 371.1 to 359.3 million years ago. An earlier 2012 estimate, still used by the International Commis ...

Oryol Oryol ( rus, Орёл, , ɐˈrʲɵl, a=ru-Орёл.ogg, links=y, ), also transliterated as Orel or Oriol, is a Classification of inhabited localities in Russia, city and the administrative center of Oryol Oblast, Russia, situated on the Oka Rive ...

, Russia and

Latvia Latvia, officially the Republic of Latvia, is a country in the Baltic region of Northern Europe. It is one of the three Baltic states, along with Estonia to the north and Lithuania to the south. It borders Russia to the east and Belarus to t ...

. Scales of this species are particularly common in Devonian localities of Latvia. It was named after paleontologist Walter R. Gross. It was previously placed in the family Megalichthyidae, but is presently considered an indeterminate "

osteolepiform Osteolepiformes, also known as Osteolepidida, is a group of prehistoric lobe-finned fishes which first appeared during the Devonian period. The order contains the families Canowindridae, Megalichthyidae, Osteolepididae and Tristichopteridae, ...

References

Tetrapodomorpha Late Devonian sarcopterygians Devonian sarcopterygians of Europe Famennian life Fossils of Russia Fossils of Latvia Fossil taxa described in 1975 {{paleo-tetrapodomorph-stub