Most satellite tagging studies of leatherbacks have focused on adult females on their tropical nesting beaches, so little is known worldwide about males and subadults, the researcher point out. But now, tagging and satellite tracking in locations where leatherbacks forage has allowed the scientists to get a much richer picture of the leatherback's behavior and dispersal patterns on the open ocean.
Scientists have discovered a bizarre, bird-like dinosaur, named Anzu wyliei, that provides paleontologists with their first good look at a dinosaur group that has been shrouded in mystery for almost a century. Anzu was described from three specimens that collectively preserve almost the entire skeleton, giving scientists a remarkable opportunity to study the anatomy and evolutionary relationships of Caenagnathidae -- the long-mysterious group of theropod dinosaurs to which Anzu belongs.
Using ancient DNA analysis and other techniques, a research team led by conservation biologists has determined that bighorn sheep, so named for their massive spiral horns, became extinct on Tiburon Island, a large and mostly uninhabited island just off Sonora, Mexico, in the Gulf of California, sometime in the last millennium -- specifically between the 6th and 19th centuries.