PALEO

paleo

Tricky take-off limited pterosaur size

Pterosaurs are the largest flying animals in Earth’s history — some boasted nearly double the wingspan of the largest flying birds. But just how big the airborne reptiles grew and what kept them from achieving even greater sizes are outstanding questions. Now, a new study examining the mechanics of pterosaur flight suggests that taking off was perhaps the trickiest part of flying for pterosaurs, and likely constrained their size more so than other factors.

 
12 Mar 2015

Early horse history written in Indian coal mine

Modern horses, rhinos and tapirs — all ungulates with an odd number of toes — belong to a group of animals called Perissodactyla. The oldest Perissodactyla fossils date from the Early Eocene Epoch about 56 million years ago, but the animals’ earlier evolution remains a mystery. Now, a discovery in India suggests that the group likely originated on the Indian subcontinent when it was still an island on a collision course with Asia.

 
10 Mar 2015

Fossil leaves reveal effect of "impact winter"

When the Chicxulub bolide struck the Yucatán Peninsula at the end of the Cretaceous about 66 million years ago, widespread extinctions of land and marine animals resulted. However, the blast’s lasting effects on plants, which tend to be more resilient against impact-related fallout, have been less clear. Now, a new analysis of fossil leaves dating to around the end-Cretaceous offers some of the first quantitative evidence of a substantial shift in plant communities — toward more deciduous plants — following the impact.

05 Mar 2015

Travels in Geology: Exploring Connecticut's Ancient Rift Valley

Fifty years ago, a bulldozer operator in Connecticut discovered one of the largest dinosaur tracksites in North America, now preserved at Dinosaur State Park. The formation of the tracksite, which lies in the remnant of a Triassic rift valley, is linked with the demise of the supercontinent Pangea. 

17 Feb 2015

Getting there and getting around Connecticut's ancient Rift Valley

Central Connecticut is easily accessible via major roads and flights into Hartford’s Bradley International Airport. The region is well equipped with rental cars, hotels, restaurants and everything else a traveler could need.  The website www.ctvisit.com has maps and more details on all of the attractions listed here, as well as lodging, food and other activities.

 
17 Feb 2015

Crumbly amber holds dinosaur secrets

In the movie “Jurassic Park,” dinosaurs were resurrected from DNA in blood harvested from Mesozoic mosquitoes preserved in amber. The plot was pure science fiction, but a new study has found another use for the biological material trapped in fossilized tree resin. By studying microscopic inclusions of plant material, pollen and feathers preserved in bits of amber recovered alongside dinosaur fossils, paleontologist Ryan McKellar of the Royal Saskatchewan Museum in Canada is recreating a more complete picture of the Mesozoic landscape.

 
12 Feb 2015

Scientists sequence oldest modern human genome to date

A chance fossil find along a Russian river has provided researchers with the oldest genomic data ever sequenced from a modern human. The fossil, a nearly complete left femur, was pulled from a bank along the Irtysh River near the Ust’-Ishim district in western Siberia in 2008 by a Russian artist before it made its way to scientists.

11 Feb 2015

Stegosaur's tail packed a lethal punch

With their big lumbering bodies and plates of armor, stegosaurs can be likened to the modern-day rhinoceros. Both are primarily peaceful plant eaters, but you wouldn’t want to make either of them mad. Now, paleontologists have uncovered evidence of a casualty of stegosaurian combat: a predatory allosaur with a lethal conical wound the size and shape of a stegosaur tail spike.

07 Feb 2015

Ancient cave art discovered in Indonesia

Europe has long been thought to have been the home of the oldest art in the world — including a stash of cave paintings in northern Spain that date to about 40,000 years ago — but a new dating technique may put Indonesia on the ancient art map as well.

06 Feb 2015

New species of titanosaurus discovered in Tanzania

The Cretaceous landscape was dominated by huge herbivorous sauropods, the largest land animals ever to walk the planet. Fossils from many of these massive creatures have been unearthed around the world, but the recent discovery of a new specimen of titanosaurus in Tanzania is among the first sauropods found on the African continent.

14 Jan 2015

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