Earth was a terrifying place during the Cretaceous period, some 66 million to 145 million years ago. During its tail end, Tyrannosaurus rex prowled the land. And a little before that, another kind ...

One of these, known as the Black Knight and also housed in the Perot Museum, has significant damage to its snout and jaw that ...

Researchers described two extinct finned octopus species from Cretaceous-era fossils, evidence that giant invertebrates ...

"Besides being huge, roughly twice the length of the largest great white sharks, T. rex appeared to be a much meaner animal ...

The ancient cephalopod, Nanaimoteuthis haggarti, appears to have been an apex predator that rivaled mosasaurs to rule prehistoric seas.

‘Kraken’ fossils show enormous, intelligent octopuses were top predators in Cretaceous seas Fossil jaws from colossal octopuses place them at the top of a prehistoric marine food chain ...

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 ...

A UW-led research team uncovered the fossil of a 75-million-year-old mammal that was roughly the size of a golden hamster, ...

The Minnesota Discovery Center is opening a major renovation in its Hall of Geology, featuring fossils and relics from the ...

Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucat n Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the early ...

Mesozoic seas were full of marine monsters. There were snaggle-toothed fish, shell-crushing sharks, and, of course, enormous mosasaurs. Now, researchers have revealed another dangerous denizen of the ...