A remarkably preserved 150-million-year-old shark fossil is forcing researchers to reconsider how modern sharks evolved. The species, Bavariscyllium, displays a mix of features that do not align with ...
The situation is so unique that the area has earned a fitting nickname: Sharkansas. Paleontologists have long wondered how ...
More than 500 specimens believed to be about 20 million years old have been unearthed in Fremont. The fossils include teeth from the biggest prehistoric shark and what appears to be an entire whale ...
Most shark fossils are just teeth—their cartilage skeletons usually decay long before they can fossilize. But in northwestern Arkansas, a series of geological sites known as the Fayetteville Shale has ...
A newly examined prehistoric shark from the age of dinosaurs provides surprising insights into the early evolution of modern sharks. It cannot be confidently assigned to any shark order that exists ...
More than 300 million years ago, much of what is now Arkansas lay beneath a shallow sea. Today, that ancient seafloor has ...
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