A recent study found that large, plant-eating dinosaurs were already headed for extinction before an asteroid hit Earth 65.5 million years ago. Research indicates that large plant eaters, including hadrosaurs and ceratopsids were declining as a result of changes in the earth’s terrain, including volcanism and sea level changes. Small plant-eaters, carnivorous dinosaurs and huge plant-eaters without advanced chewing abilities all appear to have been prospering before the asteroid.
Scientists believe to have uncovered fossilized dinosaur eggs in Chechnya. Explorers found 40 eggs in the mountains, potentially making this the biggest discovery of fossilized dinosaur eggs in mountain terrain south of the republic. Explorers claim that these eggs were laid by plant eating dinosaurs over 60 million years ago.
Professor Brian J. Ford surmises that dinosaurs’ were too large to have roamed land and that they must have lived in water. He theorizes that a shallow water landscape would have supported their bulk, and huge tails would have been buoyant, floating in the water as a swimming aid.
Researchers in South Africa have discovered the oldest known dinosaur nesting site to date, dating to 190 million years ago. The findings include multiple nests, eggs, and hatchlings belonging to the Massospondylus, an herbivorous dinosaur with a small head and long neck. 10 nests have been found so far, and scientists predict there are many more to be unearthed.
Read more about the discovery and the condition of the nests and eggs on the Huffington Post.
Over 350 newly discovered tracks from dinosaurs, pterosaurs and crocodiles have been discovered in Colorado along what must have been a major thoroughfare for dinosaur travel. The dinosaurs that traveled this ‘freeway’ included large plant eaters, armored dinosaurs like Ankylosaurs and ostrich-like dinosaurs that were likely ornithomimids.
The Dinosaur Freeway runs from Northeast Colorado to east central New Mexico.
Over the past 20 years, South American paleontologists have unearthed several giant species of dinosaurs, including the Argentinosaurus, which is considered to be the biggest dinosaur of all. However, in a report published last Tuesday, it seems that North America now has its’ own species to brag about. Two giant vertebrae and a femur belonging to the Alamosaurus sanjuanensis, a sauropod species, were discovered in New Mexico between 2003 and 2006. Originally, researchers thought that this 69-million-year-old species weighed about 30 tons. Yet the findings from this most recent study showed that the femur discovered belonged to a dinosaur that was still growing, indicating that the Alamosaurus got much bigger than they had ever imagined. This puts the species in the same league as the Argentinosaurus, which weighed about 70 tons and was 40 meters long. Paleontologists are now on the hunt to find more clues about this species’ life, death, and enormity.