Blake de Pastino

The fossil of an armored dinosaur discovered in Montana is the most complete ever found in North America, paleontologists say, and it’s the first anywhere to be found with a complete skull and tail. Read More

TUCSON, ARIZONA — A day’s work in an Arizona corn field some 2,500 years ago has been frozen in time, thanks to the footprints of some ancient farmers, their children, and even their dogs, which have been found perfectly preserved at a construction site just north of Tucson. The prints number in the dozens and depict the movements of several adults and at least one child, as they tended to their neatly arranged crops and the small irrigation ditches that watered them.

Analysis of an Allosaurus fossil from southern Wyoming shows that the giant meat-eater died from a painful wound that appears to be unique in the fossil record: a deep stab to the crotch, delivered by the spiky tail of a stegosaur.