Paleontologists have described a new genus and species of stem-chelydrid turtle using complete fossilized shells and associated material found in the Early...
Crocodylians are surviving members of a 230-million-year lineage called crocodylomorphs, a group that includes living crocodylians (i.e. crocodiles, alligators...
New research from the University of Bristol provides evidence that many mammals were already shifting toward a more ground-based lifestyle leading up to...
Plant-eating sauropod dinosaurs were ecosystems engineers, profoundly changing their environments by knocking down trees and eating high volumes of vegetation....
Fungus-farming ants cultivate multiple species of fungi for food, but the history of fungus-ant co-evolution is poorly known. In a new study published...
The so-called Chicxulub impactor was a carbonaceous-type asteroid that had formed beyond the orbit of Jupiter, according to a new paper published in the...
About 66 million years ago, at the end of the Cretaceous period, a 10-km-wide asteroid crashed into Earth near the site of the town of Chicxulub in what...
A team of paleontologists from the United Kingdom and the United States has analyzed the fossil record of ammonites — marine mollusks often distinguished...
Paleontologists from Denver Museum of Nature & Science, Kent State University, the University of Michigan and City University of New York have discovered...
Paleontologists have described a new species of the extinct lamniform shark genus Palaeohypotodus based on 17 fossilized teeth found in Alabama, the United...
A team of paleontologists from Oklahoma State University, the University of Toronto and Royal Ontario Museum has added another species of caenagnathid...
The end-Cretaceous mass extinction, which included the elimination of all non-avian dinosaurs, occurred after the impact of the Chicxulub asteroid and...
New research demonstrates that the brain of Thescelosaurus neglectus, a small plant-eating neornithischian dinosaur that lived just before the end-Cretaceous...
About 66 million years ago, a massive asteroid crashed into Earth near the site of the small town of Chicxulub in what is now Mexico. The impact eradicated...
A family of medium-sized iguanodontian dinosaurs called the Rhabdodontidae was one of the most important dinosaur groups inhabiting the ancient European...
Paleontologists have unearthed the fossilized remains of two T. rex cousins in the Ouled Abdoun Basin, northern Morocco.
Fossils have been found of several...
After the extinction of non-avian dinosaurs at the end of the Cretaceous period, many mammals underwent a rapid increase in size. Several hypotheses for...
Paleontologists have long debated why groups such as non-avian dinosaurs became extinct whereas mammals and other lineages survived the end-Cretaceous...
