Podoliacanthus
Podoliacanthus is an extinct genus of Acanthodii ("spiky sharks") which existed in what is now Greenland and Ukraine during the early Devonian period. It was described by Victor Voichyshyn and Hubert Szaniawski in 2012, and the type species is Podoliacanthus zychi. It also contains three presently undescribed species.

References

Ischnacanthiformes
Early Devonian cartilaginous fish
Devonian cartilaginous fish of Europe
Devonian cartilaginous fish of North America
Fossils of Greenland
Fossils of Ukraine