A set of jaws can invoke visions of deadly toothy sharks, and now scientists find the earliest fish with chops — the ancestors of all jawed creatures with backbones — were also armed with teeth, ...

Early jawless fish were likely to have used bony projections surrounding their mouths to modify the mouth’s shape while they collected food. Experts led by the University of Birmingham have used CT ...

Lab rats have rights. Before researchers in the United States can experiment on the animals, they need approval from committees that ensure they follow federal regulations for housing and handling 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 ...

Humans have hardy prehistoric fish ancestors to thank for paving the way to their eventual evolution, a new study suggests. About 360 million years ago a mass extinction event hit the reset button on ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is the smallest animal ever? – Peter, age 9 ...

Our earliest vertebrate (animals with backbones) ancestors laid eggs, but over millions of years of evolution, some species began to give birth to live young. There is a traditional dichotomy in ...

WASHINGTON (Reuters) - It looked like a cross between a crocodile and a salamander - and definitely was not an animal to be messed with. Long before the dinosaurs or even the advent of the earliest ...

Gathering vision data for hundreds of vertebrates and invertebrates, University of Arkansas biologists have deepened scientists’ understanding of animal vision, including the colors they see. The ...

Lab rats have rights. Before researchers in the United States can experiment on the animals, they need approval from committees that ensure they follow federal regulations for housing and handling the ...