Best Eugeneodont
Helicoprion is an extinct genus of shark-like cartilaginous fish that lived during the Permian period, first named in 1899. Belonging to the order Eugeneodontida, this marine predator is famous for its bizarre anatomical feature: a symphyseal tooth whorl arranged in a continuous spiral. Because thei...
Helicoprion bessonowi was a Permian eugeneodont, an extinct cartilaginous fish related to sharks and chimaeras. Alexander Karpinsky named it in 1899 from a distinctive spiral arrangement of fossil teeth found in the Ural region of Russia. The position of this tooth whorl was debated for decades, but...
Edestus is an extinct genus of eugeneodontid holocephalan fish that lived during the Late Carboniferous period, with fossils found in regions including the United States, Russia, and the United Kingdom. The genus is distinguished by its unique tooth whorls, which projected outward from its jaws and...
