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A skull of Romundina, one of the earliest jawed fish, is shown in this image courtesy of Uppsala University in Sweden. REUTERS/Philippe Loubry, MNHN-CNRS-UPMC/Handout (Reuters) By Will Dunham ...

Dec. 6 (UPI) --The hagfish, an eel-shaped, jawless fish, has offered scientists new insights into the development of the inner ear structure present in all jawed vertebrates. The inner ears of all ...

Researchers at the RIKEN Evolutionary Morphology laboratory and other institutions in Japan have shown that complex divisions in the vertebrate brain first appeared before the evolution of jaws, more ...

Before the first ape fell out of the tree and the dinosaurs roamed the Earth, our most ancient vertebrate ancestors evolved in the oceans hundreds of millions of years ago. These were simple, ...

The efficient architecture of our joints, which allows our skeletons to be flexible and sturdy, originated among our most ancient jawed fish ancestors, according to a study published in the ...

(CNN) — Hundreds of millions of years ago, jawless fishes swam Earth’s seas, their brains protected on the outside by armored skin, and on the inside by plates made of cartilage. Scientists are still ...

Researchers have shown that complex divisions in the vertebrate brain first appeared before the evolution of jaws, more than 500 million years ago. The study shows that two elements of brain ...