A new study proposes that the massive ancient shark was built more slenderly than a great white. But not all paleontologists ...

Megalodon may have been up to 80 feet long, but the colossal extinct shark was also probably thinner than scientists ...

NPS Illustration/Benji Paysnoe The park, particularly the Ste. Genevieve Formation, where the McGinnis’ nail tooth shark was found, is where more than 70 species of sharks and other fish have been ...