"During the Late Cretaceous, atmospheric CO2 levels reached about 1,000 parts per million — comparable to projections for the ...

Some 80 million years ago, the late Cretaceous oceans were patrolled by 17-meter mosasaurs, long-necked plesiosaurs, and massive, predatory sharks. For decades, the paleontological consensus was that ...

New research suggests Earth’s climate can swing wildly on surprisingly short timescales — even during hot, ice-free ...

Thalassotitan was one of the largest and most fearsome mosasaurs of the Late Cretaceous, reaching lengths of up to 10 meters and dominating the ancient seas of what is now Morocco. Its worn, chipped, ...

A hundred million years ago during the late Cretaceous period, the oceans were filled with giant predators, prowling for their next meal. There was the mosasaur — a giant toothy marine reptile (and a ...

An octopus species that lived about 80 million years ago had a body length of up to 19 meters and was likely the top predator in the oceans, researchers said.

The Arctic was not simply a cold edge of the Cretaceous world, but a place where mammals adapted, diversified, migrated and ...

The Late Cretaceous epoch witnessed an exceptional radiation of marine fishes, encompassing both cartilaginous and bony lineages that laid the foundation for much of today’s oceanic vertebrate ...

A new study brings together intriguing details about the little-known Rhabdodontidae dinosaurs of Late Cretaceous Europe. These gregarious herbivores, characterized by robust builds and beaks ...

When you think of dinosaurs, you might automatically imagine iconic dinosaurs as Tyrannosaurus and Triceratops. But at the same time when these were stomping on the ancient coastal plains of North ...