Palaeontologists found a treasure trove of well-preserved Triassic period fossils on land that the Trump administration removed from the Bears Ears Monument.
Scientists raced as many as 12 bird species on an enclosed track to understand and relate their locomotive traits to those of long-extinct dinosaurs.
Palaeontologists believe the ancient trackway represents footprints of "adult, juvenile and infant mammoths".
The fossil, which was found in rocks in a quarry near Cardiff in South Wales, has been named Clevosaurus cambric.
The fossil is only the second known specimen found to belong to the rare prehistoric sea creature species called Wahlisaurus massarae.
The fossil was discovered by a young tourist – a 10-year-old-boy – during his visit to the Monastery of La Candelaria in Colombia.
Scientists believe that around 12,800 years ago, the Earth was hit by fragments of a dying comet, measured around 100km in diameter.
Palaeontologists consider this find as the "Holy Grail" of discoveries, since dinosaur fossils from the end of the Age of Dinosaurs are hard to find in Africa.
Archaeopteryx is an important group of bird-like dinosaurs which marks the evolutionary transition between reptilian dinosaurs and birds.
The new discovery of the mysterious prehistoric sea creature, which dates back to the Ordovician period, has stumped palaeontologists.
Newly discovered fossils reveal that giant tortoises residing in the island of Aldabra Atoll were once preyed upon by gigantic crocodiles.
The newly-identified brittle star species is believed to be the cousin of modern starfish and is considered to have had incredible survival powers.
Caihong juji was about the same size as a duck and lived 161 million years ago, according to scientists.
Palaeontologists were able to digitally reconstruct every bone of the dinosaur's skull, allowing them to study features like nerves, never described before.
Previously unknown species, which has been named Diluvicursor pickeringi, uncovered in 113-million-year-old rocks in south-eastern Australia.
33 fossil teeth of the Cretaceous Period shark, collected over a period of 38 years, revealed a new species that was likely the ancestor of the largest known shark – megalodon.
Titanoboa cerrejonensis is the largest snake ever known to have existed and an early ancestor to today's boa constrictors.
Scientists studied the fossilised bones of a shark that lived during the Devonian period to find that humans' ancient ancestor was also related to sharks.
Urkudelphis chawpipacha may be the ancestor of modern river dolphins, say scientists after exciting find in Ecuador.
Archaeologists found fossils, less than a millimetre long, of Cambrian animals that swam the Earth's seas over half a billion years ago.
Plesiosaurs are a group of marine reptiles which roamed the oceans until being wiped out 66 million years ago.
The stunningly well-preserved fossil of the 70-million-year-old dinosaur was reportedly dug up by poachers and smuggled to Europe.