A newly discovered trove of fossilized footprints provides what may be the first evidence of prehistoric diversity in dinosaur herds, though not everyone is convinced.

But T. rex was also the last of its meat-tearing family. The earliest tyrannosaurs evolved about 166 million years ago. In ...

The other two lots that sold for seven figures and well above high estimates were dinosaur fossils: a "virtually complete" Skull of a Pachycephalosaurus (estimate of $800,00 – $1.2 million) and an ...