Sentences with phrase «flightless dinosaurs»

Second, the researchers examined the state of the two groups» family trees at ten - year intervals, beginning in 1790 for the catarrhines and in 1840 for the flightless dinosaurs.

However, the idea of comparing a narrow branch of primates with all flightless dinosaurs troubles other researchers who were not part of Tarver's study.

EARLY BIRD The flightless dinosaur - like bird Archaeopteryx could glide, as seen in this artist's illustration.

Not exact matches

«We have to remember it appears 10 million years or so after the oldest known bird - like dinosaurs and so our famous «first bird» may really be a secondarily flightless one.»

One possibility, the researchers say, is that Zhenyuanlong evolved from dinosaur ancestors that could once fly, similarly to the way that flightless birds like today's ostriches and penguins evolved from flight - capable forebears.

Earlier finds from Liaoning had hinted at the presence of featherlike structures on several dinosaur specimens, but critics charged that the structures were instead fibers of the protein collagen or that the fossils represented not dinosaurs but flightless birds.

McKellar suspects the marine birds might have been Hesperornithiformes, a specialized flightless diving bird from the Dinosaur Era.

Though many species — such as the moa, a giant flightless bird, and the Haast's eagle, with its impressive 10 - foot wing span — have gone extinct since European settlers arrived, countless others remain, such as the kakapo, the world's heaviest parrot (which is also flightless) and the tuatara, a reptile that was a contemporary of the dinosaurs and is now the last of its kind.