Brain
Just how brainy was a T. rex?
A debate rages over how to count brain cells in dinosaurs. At issue: figuring out how these extinct animals’ likely behaved.
By Freda Kreier
Fossils
More Stories in Fossils
- Animals
Scientists Say: Megalodon
The extinct megalodon (Otodus megalodon) was the largest shark to ever prowl the oceans.
- Life
Bacterial fossils exhibit earliest hints of photosynthesis
Microscopic fossils from Australia suggest that some bacteria evolved structures for oxygen-producing photosynthesis by 1.78 billion years ago.
- Physics
Neutrons are unveiling hidden secrets of fossils and artifacts
Images made with these particles have revealed details of dinosaur bones, mummies and more.
- Life
Scientists Say: Ichnology
This field of science looks to understand life — past and present — by studying how organisms altered their surroundings.
- Animals
This massive ancient whale may be the heaviest animal ever known
Called Perucetus colossus, it may have tipped the scales at up to 340 metric tons — more than today’s blue whales.
- Fossils
New fossils bring the wide world of pterosaurs to life
The latest clues from fossils hint at where these flying reptiles came from, how they evolved, what they ate and more.
- Fossils
This bizarre ancient predator snagged soft prey
Scientists are rethinking how this extinct creature used the spiky limbs sticking out of its face to hunt.
- Animals
Megalodons may have become megahunters by running hot
O. megalodon sharks were warm-blooded mega-predators. But when food sources dwindled, colder-blooded sharks may have had an evolutionary edge.
- Fossils
T. rex may have hidden its teeth behind lips
Dinosaurs like Tyrannosaurus have long been portrayed with their big teeth bared. But new research suggests this wasn’t so.
