... Organ and Andrew Shedlock, who provided evidence that theropod dinosaurs already had (somewhat) reduced genome sizes prior to the evolution of birds (Organ et ...
... -scanned and measured the skulls of a wide variety of theropod dinosaurs, including raptors and ostrich-like ... , had an olfactory bulb size comparable to most theropod dinosaurs. Although sight is very good in most birds ...
... nest attendant." The researchers now had their link from the theropod dinosaurs (omnivores and carnivores that walked on two ... and deinonychosaurs (Jurrasic Park "raptors") -- small theropod dinosaurs whose adult skeletons have been repeatedly ...
... . Two of their discoveries represent new species of theropod dinosaurs, and both are described in technical publications ... species of ornithomimosaur, or ostrich-mimic dinosaur. Ornithomimosaurs are a lineage of theropods that evolved a toothless beak ...
... said, is that birds almost certainly did not descend from theropod dinosaurs, such as tyrannosaurus or allosaurus. The findings add ... was similarities in their lungs," Ruben said. "However, theropod dinosaurs had a moving femur and therefore could not have had a lung that worked ...
... into a long-standing controversy over which fingers are present in living birds, which are theropod dinosaur descendants. The hands of theropod dinosaurs suggest that the outer two fingers were lost during the course of evolution and the inner ...
... than as separate and endemic fauna. "We would expect that all of the theropod dinosaurs found in the quarry were related to each other," says Sterling ... show that dispersal of early dinosaurs was prevalent during the Triassic, with the multiple theropods from the Hayden Quarry ...
... about the archosaur that was the common ancestor of crocodilians and of pterosaurs, dinosaurs and birds, Farmer says. It probably was "a small, relatively ... family tree, arising among pterosaurs and theropod dinosaurs, the primarily meat-eating group ...
... a paper published in Nature this week. The research found that the theropod dinosaur Sinosauropteryx had simple bristles – precursors ... evolved through a long line of theropod (flesh-eating) dinosaurs. It also demonstrates that the unique assemblage ...
... . "The primary goal of our expeditions was to find evidence of the theropod dinosaurs closest to birds, and the discovery of Haplocheirus ... and other alvarezsaurs evolved from a more typically theropod grasping hand." Theropod dinosaurs include charismatic, meat ...
... chickens, probably functioned in communication and may have helped the dinosaur to attract mates, suggested Prum. The transformation ... -controversial theory that modern birds are descendants of theropod dinosaurs. The Yale team and Julia Clarke ...
... that birds did not descend from ground-dwelling theropod dinosaurs, experts say, and continues to challenge decades ... but they have much more in common with birds than they do with other theropod dinosaurs such as Tyrannosaurus," Ruben said. "We think the evidence is finally ...
... species. Linheraptor is in the Dromaeosauridae family of the carnivorous theropod dinosaurs and lived during the Late Cretaceous period. In addition to Linheraptor and Velociraptor, theropod dinosaurs include charismatic meat-eaters like ...
... of these leeches no-doubt shared an environment with dinosaurs about 200 million years ago when some ancestor ... formicid ant, and, of course, the infamous Cretaceous theropod dinosaur that was described in 1905 by an earlier curator ...
... locomotion. If a comparable mechanism existed in extinct theropod dinosaurs that shared similar running styles ... wing characteristics and will hopefully establish additional links between ostrich and theropod dinosaur locomotion, say the researchers ...
