First scampering onto the scene around 230 million years ago, theropod dinosaurs were some of the biggest predators on the block - and also some of the smallest. From the ferocious 14,500-pound ...

A fossilized dinosaur egg measuring just 29 millimeters in length, discovered in Ganzhou, East China's Jiangxi Province, has ...

Paul says, 'Sauropods were the only group that were heavier than the largest land mammals. 'Interestingly, theropod dinosaurs such as Spinosaurus and T. rex were also the only animals to exceed the ...

Footprints made by large theropod dinosaurs have been found on Australia ... Moreover, while theropods ranged dramatically in ...

The most complete egg has a maximum length of only 29 mm, setting a new record for the smallest dinosaur egg fossil, Lou said. The previously known smallest dinosaur egg fossil was found in China's ...

These carnivorous dinosaurs roamed the river floodplains during the summers when the ice ... Of the 24 tracks detailed in the paper, 18 belong to theropods, ranging in size from seven to 18.5 inches.

During the course of their evolutionary history, the body size of some theropod groups gradually decreased. This trend, together with many other changes to the skeleton, ultimately led to the ...

Experts had long expected that birds shared a close relationship with theropod ... oldest feathered dinosaurs yet uncovered. The living animal would have been about the size of a crow, covered ...

Eighteen of the 24 tracks belonged to therapods and ranged in size from 18cm to 47cm long. The four ornithopod footprints were smaller, at 10cm to 18cm long. Two footprints were of uncertain origin.

A discovery of dinosaur tracks on Australia's southern coast—dating back to the Early Cretaceous when Australia was still connected to Antarctica—indicates that large theropod dinosaurs thrived in ...