Two dinosaurs from Africa give clues to continents' split
...ies of the group that later evolved into the first horned predators." The authors of the scientific paper describing the two new dinosaur finds are Sereno, Jeffrey Wilson of the University of Michigan and Jack Conrad of the University of Chicago. The second new dinosaur species, named Spinostropheus gautier...New dinosaur related to Triceratops
... gives us a great window on the early evolution of horned dinosaurs and tells us that Triceratops and its relatives evolved from very small Asian ceratopsians," Dr. Makovicky concludes. China site rich in fossils The name of the new dinosaur refers to the province and village in China (Liaoning and Yanz...Proliferation of Argentine ants in California linked to decline in coastal horned lizards
...sharp decline in the state's population of coastal horned lizards. In separate papers published this mon...biologists show that the severe decline in coastal horned lizards in southern California in recent years is intimately tied to the proliferation of Argentine ...Dinosaurs' large noses may have been key to physiological processes
...ckets. Witmer found the largest nasal passages in horned dinosaurs like Triceratops, duck-billed dinosaurs, and brontosaurs like Diplodocus, the latter of which was 80 to 90 feet long and weighed more than 40 tons. Other scientists had studied dinosaur noses, Witmer said, but their focus was primarily on...New study puts dinosaur noses in their place
...ropods, but it also will make a big difference for horned and duck-billed dinosaurs," Witmer said. "Biologically it'll make a huge difference for all kinds of dinosaurs." Witmer's research suggests that many of the large dinosaurs he's studied Diplodocus was 80 to 90 feet long and weighed more than 40 ton...Microscopic bone evidence supports dinosaur-bird evolution link
...of dinosaurs called ornithischians, which includes horned creatures such as Triceratops, the canalicular organization follows a much more regular pattern with very direct and parallel routes, a structure similar to that in modern mammals. The work also sheds light on another controversy - whether dinosaurs ...Grasslands, deserts, mountains and fire
...pecies that may be threatened are lark bunting and horned lark. Scientists already know that the number of birds that survive to adulthood in grassland areas is very low and that the reason why may relate to differences in vegetation type. Scientists also know that the number of small mammals in a grasslan...Success of introduced Argentine ants tied to reduced genetic variation
...rger native ants. One such creature is the coastal horned lizard, which has declined by 50 percent in recent years, according to Andrew V. Suarez, a graduate student and a co-author of the paper who has been studying the impact of the introduced ants on the lizards. He discovered two years ago that native...Montana Scientist Returns From Dinosaur Nesting Site In Patagonia
... The second day out, the crew discovered a horned meat-eating dinosaurfrom the Abelisauras family. Buried in a lake deposit, the bones werearticulated, or still intact. The animal's feet, which hadn't been found before,were still attached, Jackson said. "It looked like the thing just fell o...Scientists Unearth Remains Of A Predatory Dinosaur In Madagascar
... importanceis the animal's strong resemblance to a horned theropod called Carnotaurus,known only from Argentina. Both Majungatholus and Carnotaurus belong to thedinosaur family Abelisauridae, which lived during the Late Cretaceous period.Previously, members of this family have been found only in India and S...