Taxonomy term

dinosaur

Flightless dino had bright, rainbow-colored feathers

In recent years, many dinosaurs have gotten a fabulously feathered makeover, but for the most part, scientists still aren’t sure what colors the animals were. A new discovery of a finely preserved feathered dinosaur fossil in China suggests that some dinosaurs were as brightly colored as modern-day hummingbirds.

10 May 2018

Lidar preserves record of destroyed theropod tracks

In 2011, the first theropod dinosaur tracks ever discovered in Arkansas were uncovered at an active gypsum quarry near Nashville in the southwestern part of the state. Over two weeks, researchers collected a set of high-resolution digital scans of the trackway that has now allowed scientists to piece together its 100-million-year-old story, even though the tracks have long-since been destroyed by mining operations.

26 Apr 2018

Whatever happened to thagomizers and other tail weapons?

Stegosaurus wielded a spiked tail — dubbed a “thagomizer” by cartoonist Gary Larson and informally adopted by paleontologists — which the herbivorous dinosaur likely used for defense against hungry predators. Other extinct animals also sported foe-clobbering tail weapons: Ankylosaurus had a tail club, as did extinct mammals like the glyptodonts, giant armadillo-like animals that once roamed the Americas. Today, though, thagomizers and bony tail clubs are things of the past. In a new study, paleontologists have found that extinct animals with such weapons all shared a now-antiquated set of traits: They were large, herbivorous, and had body armor and a stiff torso.

23 Apr 2018

Pesky ticks even plagued dinosaurs

Blood-sucking, disease-spreading ticks are one of the most maligned parasites in the world, and new evidence shows they’ve been doing their dirty work for a long time: Fossilized ticks dating to the mid-Cretaceous represent the first direct evidence that the ancestors of today’s pesky critters once plagued dinosaurs.

20 Mar 2018

World's longest sauropod trackway exposed

Excavations at a dinosaur trackway found in 2009 in the French village of Plagne, 200 kilometers east of Lyon, revealed 110 sauropod footprints spanning a distance of 155 meters, making the site the world’s longest sauropod trackway. In a new study published in the journal Geobios, researchers report that the tracks were made roughly 150 million years ago and that the largest tracks measure more than a meter across. Analysis of the trackway suggested the prints were left by an animal at least 35 meters long and weighing more than 35 tons, that traveled about 4 kilometers per hour with an average stride of 2.8 meters. The prints were assigned to a new ichnospecies — a species only known from trace fossils — named Brontopodus plagnensis.

05 Mar 2018

Denali's Asian dinosaurs

Paleontologists have long hypothesized that a land bridge between present-day Siberia and Alaska served as a gateway for fauna to migrate between Asia and North America during the Cretaceous, but they have unearthed little evidence that directly supports this idea. Now, researchers have found an Asian dinosaur track assemblage in North America, a discovery that backs the longstanding hypothesis.

23 Jan 2018

Fossilized dinosaur feces reveal flexitarian diet

Fossilized feces tell paleontologists a lot about what dinosaurs ate. Some unusual coprolites discovered in Utah’s Grand Staircase-Escalante National Monument may indicate that normally herbivorous dinosaurs occasionally ate crustaceans.

03 Jan 2018

Down to Earth With: Paleontologist Ali Nabavizadeh

A perfect day in the life of paleontologist Ali Nabavizadeh wouldn’t be complete without a fresh corpse. The subjects of his work at the dissection table range from a rhinoceros, to an elephant head, to the human cadavers essential to the anatomy classes he teaches at Cooper Medical School of Rowan University in Camden, N.J. The only thing that could possibly top a fresh corpse, in fact, is an extremely old one.

20 Dec 2017

Transitional Chilesaurus fills gap between major dinosaur groups

In 2015, a new dinosaur was discovered in southern Chile, but its odd set of characteristics left paleontologists scratching their heads: Was it a carnivore or an herbivore? A closer look at the bones of the dinosaur, named Chile­saurus, is helping scientists determine how it fit into the Late Jurassic landscape.

06 Dec 2017

Dino deaths cleared the way for frogs

Frogs make up almost 90 percent of amphibians, and with 6,775 described species, frogs are considered one of the most diverse groups of vertebrates on the planet. In a new study in Proceedings of the National Academy of Sciences, researchers indicate that frogs’ rapid diversification stems back to the Cretaceous-Paleogene (K-Pg, formerly the K-T) boundary, about 66 million years ago, when nonavian dinosaurs and many other animals went extinct.

30 Nov 2017

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