The new species, named Ambopteryx longibrachium, belongs to the Scansoriopterygidae, one of the most bizarre groups of non-avian theropods
A new tyrannosauroid dinosaur, Suskityrannus hazelae, was only marginally longer than the just the skull of a fully grown Tyrannosaurus rex
Callichimaera perplexa, earliest example of a swimming arthropod with paddle-like legs since the extinction of sea scorpions more than 250 million years ago
A new species closely related to Hadrosauridae, Gobihadros mongoliensis, was discovered in Mongolia from rocks dating to Late Cretaceous
At Tanis in North Dakota’s Hell Creek Formation, paleontologists unearthed animal and fish fossils killed in events triggered by the Chicxulub impact
Paleontologists have discovered the first-confirmed occurrence of a lambeosaurine (crested ‘duck-billed’ dinosaur) from the Arctic – part of the skull of a lambeosaurine dinosaur from the Liscomb Bonebed (71-68 Ma) found on Alaska’s North Slope
A team of scientists reported the first fossil bird ever found with an egg preserved inside its body; it also represents a new species, Avimaia schweitzerae
Scientists largely agree that an asteroid impact, possibly coupled with intense volcanic activity, wiped out the dinosaurs at the end of the Cretaceous period 66 million years ago
