The distinctive dinos were found in Utah and Montana, with each sporting spiked neck shields.
A fossil stashed away in an Italian museum has given scientists a new appreciation for just how big a predatory, carnivorous dinosaur could get.
Ants from nearly 100 million years ago, trapped forever in amber in Myanmar, were both social and prone to doing battle – just like modern ants.
The creature from the Cretaceous was twice the size of anything seen today.
The distinctive creature lived 76 million years ago, during the Cretaceous, in a modern-day Utah that looked more like Louisiana bayou country.
A nest full of tiny dinosaurs froze in time a tragedy that led to their deaths around 70 million years ago.
Tiny organs, fur, spines and a fungal hair infection are still intact in a Cretaceous Era fossil.
The 22-foot, 110-million-year-old creature dates back to the Cretaceous Period.
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