New research shows that losing threatened requiem shark species could erase millions of years of tooth evolution and squeeze ...

Scientists have uncovered evidence of a colossal shark that lived off northern Australia about 115 million years ago, revealing that modern shark lineages grew to immense sizes far earlier than ...

New research reveals a prehistoric shark 115 million years older than Megalodon, rewriting the timeline of shark ancestry.

Whether you find sharks more fascinating or frightening, new research reminds us of an undebatable truth: These aquatic hunters used to be way more terrifying. Terrifying as in: nearly 32 feet long, ...

Research has shown that pelagic sharks tend to have longer, narrower fins compared to their benthic relatives, which typically possess shorter, rounded fins. A key to understanding how sharks navigate ...

More than 100 million years ago, scientists say, warming seas and reduced oxygen may have sent some sharks higher into the water column, where they evolved to be fierce and hungry. By Jeanne Timmons ...

Our understanding of shark evolution may need to be rethought following the discovery of a 410-million-year-old ancestor of this group of fish. Sharks are cartilaginous fish, meaning their skeletons ...

Researchers recently announced they’ve found four new species of “walking shark,” which will help them to understand how the Genus to which the unique sharks belong was able to split off from the rest ...

Scientists uncovered two new prehistoric shark species, Troglocladodus trimblei and Glikmanius careforum, in Kentucky's Mammoth Cave. Preserved for 325 million years, these fossils offer a rare ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. In the waters surrounding Australia, Indonesia, and Papua New Guinea ...

Hybrid sharks have been discovered swimming in the waters off Australia's east coast. The finding may be driven by climate change, a research team says, suggesting such discoveries could be more ...

Researchers studying the history of shark teeth found that the dentition of prehistoric shark ancestors differs greatly from that of modern-day sharks -- upsetting the hypothesis that teeth have a ...