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Long before modern salmon ran Alaska’s rivers, their ancient relatives thrived alongside dinosaurs in the Cretaceous Arctic. Scientists have identified three new species from 73 million years ago, ...
Teeth first evolved as sensory tissue in the armored exoskeletons of ancient fish, fossil scans find
CT scan of the front of a skate, showing the hard, tooth-like denticles on its skin (shown in orange). Credit: Yara Haridy CT scan of the front of a skate, showing the hard, tooth-like denticles on ...
A new study reveals that the sensitivity of teeth, which makes them zing in a dentist's chair or ache after biting into something cold, can be traced back to the exoskeletons of ancient, armored fish.
A newly discovered 310-million-year-old fossilised fish is the earliest known example of one with extra teeth deep inside its mouth. The ray-finned fish found in Staffordshire evolved a "unique" way ...
CHICAGO -- The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth's oceans 465 million years ago. While our ...
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