1.05" Oligocene Fossil Deep-Sea Hatchetfish (Polyipnus) - Poland

This is a 1.05" long deep-sea hatchetfish of the species Polyipnus sobnioviensis n. sp. that's nicely preserved on a slab of limestone. It comes out of the nannofossil biozone NP24 of the Jaslo Limestone near Sobniów, Poland. The fish is beautifully preserved with much of its bone structure present.


You can read more about the ichthyofauna from the Jasło Limestone/Shales of Sobniów, here.

https://www.biodiversitylibrary.org/item/100174#page/1/mode/1up