The 150-million-year-old specimen is valued at up to $6 million by Sotheby’s. Some paleontologists worry this auction and earlier ones are driving fossil market speculators.

Meet Ceratosaurus, The Great Horned Beast Of The Jurassic Period This carnivore, Ceratosaurus, was smaller than other theropods like the T. rex, but its distinctive nasal horn left a lasting mark on ...

Ceratosaurus nasicornis Marsh, 1884 See more items in Paleogeneral Types: Reptiles/Amphibians Reptilia Primary Type Paleobiology Taxonomy Animalia Chordata Vertebrata Sauropsida Reptilia Archosauria ...

New research focusing on the last 3 million years of the Cretaceous period, managed to detail exactly the chronology of the climatic, magnetic and biological events prior to the great extinction ...