A rendering of Clavusodens mcginnisi, or “McGinnis’ nail tooth,” an ancient shark that stalked the ocean floor 340 million years ago. Rendering courtesy of the National Park Service A shark no larger ...

Editor’s note: Every year, hundreds of undergraduates at the University of Delaware pursue research under the guidance of a faculty mentor. Such experiences provided by UD — a nationally recognized ...

Want to know what a sand tiger shark has been eating? Look to its teeth. Peter Pinnock / Alamy Stock Photo This article is from Hakai Magazine, an online publication about science and society in ...

Scientists have identified more than a dozen species of prehistoric sharks and rays that once lived in a single marine ecosystem, providing a fascinating glimpse into this ancient world. The sharks ...

Before we start talking about tiger shark teeth, get to know the shark that these teeth come from. Tiger sharks, like many other shark species (but not all of them), are solitary creatures. They tend ...

Most kids have a natural curiosity about sharks—especially their sharp and abundant teeth. Our team had the idea to use the appeal of this charismatic apex predator to teach how scientists use ...

A shark fossil found in Alabama dating back 65 million years is a new species, the nonprofit McWane Science Center in Birmingham announced this week. The fossils the center examined were unearthed ...

A previously unknown species of ancient shark has been discovered in Kentucky's Mammoth Cave National Park, home to the world's longest cave system. The system, which is located in the state's ...