Extinction

Paleontologists have found two pairs of hind legs from a small, bird-like dinosaur in the stomach of a juvenile Gorgosaurus unearthed in Canada. It is the first time that any food remains have been discovered within a tyrannosaur.

Fossil enthusiast John Kreatsoulas thought the artifact was a log, before he realized he was holding a bone from the last ice age.

Scientists have described two lamprey fossils with "extensively toothed" mouths from the Jurassic period, shining a light on how this group has evolved into its modern forms since the Devonian.

An 8-year-old girl discovered the bones of a woolly mammoth and a prehistoric bison after a landslide along the banks of a river in western Russia.

Diprotodon dates back to the Pleistocene epoch and is a giant relative of wombats and koalas.

Researchers documenting fossil tracks in March discovered the first tritylodontid fossils ever found in the Navajo Sandstone and rushed to retrieve them before snowmelt replenished Lake Powell.

Scientists analyzing cave lion bones have discovered the earliest evidence of Neanderthals hunting a cave lion, as well as the oldest example of human relatives using a lion pelt for cultural purposes.

A newly described titanosaur species, named after an ancient Egyptian deity, fills a gap in our understanding of Africa's dinosaurs.

The newly identified titanosaur, Garumbatitan morellensis, roamed what is now Spain around 122 million years ago. The unusual shape of some of its bones could hold clues about the evolutionary history of a unique group of sauropods.

This excerpt from Michael Mann's latest book looks at the Cambrian explosion, the Great Dying and how dinosaurs were able to take over thanks to changes to the climate 250 million years ago.