Fossils

fossil

Grazing gave elephant ancestors an edge

The poor dental hygiene of some ancient elephant-like beasts has proven a boon to future scientists. In a new study, researchers used grass fragments recovered from the teeth of two extinct species of Central Asian gomphotheriids to decode the animals’ feeding habits during the middle Miocene.

24 Aug 2018

Great Barrier Reef has died and recovered before

It’s hard to imagine Earth without the Great Barrier Reef, yet with the threats confronting it — including ocean warming and acidification — its demise is a possibility marine scientists are studying. A new study of how sea-level rise and sedimentation have impacted the reef over the last 30,000 years, however, shows it might be more resilient than previously thought.

22 Aug 2018

Travels in Geology: The pyramids of Giza: Wonders of an ancient world

At the edge of Cairo, three massive pyramids rise from the Giza Plateau’s Mokattam Formation, which comprises of layers of middle Eocene limestones and dolomites. These rocks, which display fossil evidence of their origins at the bottom of the Tethys Sea some 50 million years ago, provided the millions of multiton blocks used to construct the pyramids.
16 Aug 2018

Island-dwelling mammal had small brain, keen senses

A host of fossils has been discovered near the Romanian town of Haţeg, including 15 species of Late Cretaceous dinosaurs — some of them dwarf dinosaurs — and enormous pterosaurs with 12-meter wingspans, prompting the establishment of the Haţeg Country Dinosaurs Geopark in 2005.

26 Jul 2018

The Paleo-Bell River: North America's vanished Amazon

With similar geologic and tectonic histories, including a continuous mountain cordillera along their western margins, why does South America have a massive river draining a continentwide basin but North America does not? Before the Pleistocene, it did.
25 Jul 2018

Mineral clue to finding perfectly preserved fossils?

The exquisitely preserved fossils found in the 500-million-year-old Burgess Shale in Canada are famous for the detailed anatomy they display. They also provide a rare and crucial record of the Cambrian Explosion, when most of the major animal groups first appeared.

17 Jul 2018

Pterosaurs flew into the Late Cretaceous

Late Cretaceous skies might have been more crowded than previously thought. Until recently, scientists thought the dearth of pterosaur fossils found from the Late Cretaceous meant that the flying reptiles were in decline before the catastrophic end of the Mesozoic. But the recent discovery in Morocco of several new pterosaur species suggests this unique branch of reptiles may have been thriving just before the end-Cretaceous extinction.

04 Jul 2018

Down to Earth With: Highway paleontologist Shane Tucker

When roads are built in fossil-rich states, paleontologists sometimes follow the trucks and bulldozers to make sure that the buried treasures that construction crews occasionally uncover — namely, remnants of ancient animals and plants — get out of the ground safely and into a museum to be cataloged and studied.

27 Jun 2018

Travels in Geology: Mesozoic masterpiece: England's Jurassic Coast

England's southwestern shore is renowned for the nearly continuous 185-million-year record of Earth's history exposed in its sensational seacliffs, which record one of the world's best stratigraphic sequences from the Mesozoic Era.

18 Jun 2018

Oldest human remains outside Africa found in Israel

The recent discovery of a jawbone belonging to Homo sapiens, and associated stone tools, in Israel may push back the timing of the earliest human migration out of Africa by as much as 50,000 years.

28 May 2018

Pages