Dunkleosteus was a prehistoric fish covered in thick ... feature—its tusks curved downwards instead of upwards. These strange tusks were likely used for stripping bark or digging roots.

A new species of prehistoric fish was found in iron-rich stone in southeastern Australia. Screengrab from Australia Museum's video What can fossils tell us about prehistoric life? The length of a ...

the alligator gar (which actually has a head like a spatula), is the largest exclusively freshwater fish species in North America, and we have tons of these strange prehistoric-looking monsters of ...

While the teeth and bones of the fossil were relatively “poorly preserved,” outlines of multiple fins allowed researchers to identify the prehistoric fish as a species new to science.