In the Late Cretaceous, the region of South America that would one day become modern Argentina was a dramatic land indeed.

North America is currently in the "Goldilocks window" for finding dinosaur fossils from the Late Cretaceous period, a researcher has said. The Cretaceous period is a geological period that lasted ...

Hidden beneath North America is a secret past. For 27 million years in the Late Cretaceous, it was cleaved into two pieces. In the west was the ancient continent of Laramidia.

The discovery of a prehistoric tail-shedding reptile reveals more about large lizard life and lineage during the Late ...

Newly discovered birds from Late Cretaceous North America were hawk-sized and had powerful raptor-like feet, according to a study published October 9, 2024 in the open-access journal PLOS ONE by ...

The discovery of Bolg amondol illuminates the sometimes-murky path that life traveled between ancient continents.

Around 75 million years ago, North America’s largest and most formidable carnivore was not a dinosaur—but a croc. Deinosuchus, the “terrible crocodile” in Greek, could reach more than 35 ...

Shallow seas formed, dividing some continents. In the Late Cretaceous, for example, the Western Interior Seaway split North America into two landmasses. At its largest this sea was more than 3,000 ...

Yale University ecologists reveal a lizard lineage that rode out the dinosaur-killing asteroid event with unexpected ...

Newly discovered ancient birds from Late Cretaceous North America were hawk-sized and had powerful raptor-like feet, according to a study published October 9, 2024 in the open-access journal PLOS ...

An artist's impression of the Late Cretaceous crocodilian Deinosuchus riograndensis and a much smaller, early alligator relative. Márton Szabó. More than 75 million years ago, a giant reptile ...