Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.” So goes the famous dictum of Sherlock Holmes, echoed by paleobotanist C. Kevin Boyce in summarizing ...

Animal life, emerging nearly 600 million years ago, showcases incredible diversity and unique traits. Unlike plants, animals ...

For most of human history, the overall population is believed to have remained quite low. But since the early 1800s, the ...

A new study suggests two fossil trackways found in Australia were made by an early amniote, a group that today includes reptiles, birds and mammals ...

New clues about our earliest ancestors suggest they may have reached Eurasia sooner than scientists once thought. Fossils ...

Fossilized claw tracks discovered in Australia show that the animal group that includes reptiles, mammals and birds formed earlier than expected ...

The Chicago Archaeopteryx provides rare 3D insights into skull evolution, soft tissue structure, and the first evidence of ...

Fossil tracks from Australia reveal reptiles appeared 40 million years earlier than thought. The origin of reptiles on Earth ...

A new analysis of a pigeon-sized Archaeopteryx fossil in the collection of the Field Museum in Chicago is revealing an array ...

This cycle begins when the animals hatch from eggs into fishlike tadpoles with long tail fins. Tadpoles eat pond vegetation, ...

In fossils, the structures provide telltale signs of early sponges, but keratosan sponges lack these rigid skeletons. Instead, they get their squishy structure from networks of the protein spongin ...