What an animal eats is a fundamental aspect of its biology, but surprisingly, the evolution of diet had not been studied across the animal kingdom until now. Scientists at the University of Arizona ...

Geologists have produced a new timeline of Earth's Paleozoic climate changes. The record shows ancient temperature variations coinciding with shifts in planet's biodiversity. The temperature of a ...

Back in 260 million B.C., the mammal-like creature known as Tiarajudens eccentricus looked as fearsome as any predator —possessing rows of teeth that went all the way back into its palate, with two ...

Little is known about Paleozoic creatures’ parental prowess. But a newly uncovered 300-million-year-old fossil might be the earliest evidence of a parent, well, acting like a parent. Researchers from ...

Expeditions to a remote area of Yukon, Canada, have uncovered a 120-million-year-long geological record of a time when land plants and complex animals first evolved and ocean oxygen levels began to ...