As a shark tooth and fossil hunting enthusiast, I often have people ask me why I find fossils so fascinating. To me, the answer is simple: I’m astounded by the fact that I can walk along the beach in ...

Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed the tenaculum’s teeth develop the same way as those inside the mouth, ...

Male "ghost sharks"—eerie deep-sea fish known as chimaeras that are related to sharks and rays—have a strange rod jutting from their foreheads, studded with sharp, retractable teeth. New research ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do hammerhead sharks have hammer-shaped ...

Despite multiple mass extinctions, the frilled shark has managed to thrive for 100 million years. Today, it remains one of evolution’s most haunting survivors. Long before forests reshaped Earth’s ...

It's Shark Week, and Mammoth Cave took the unofficial holiday to announce the discovery of another new shark species. Mammoth Cave announced the discovery of the "Macadens olsoni" Thursday. The fossil ...

CT (computed tomography) scan of the adult male Spotted Ratfish frontal clasper (Tenaculum) covered in rows of teeth (rainbow colors). Male “ghost sharks” — eerie deep-sea fish known as chimaeras that ...