Specimens of Archaeopteryx length. These hindlimb proportions agree roughly with those of the London specimen. The claw arc of the central pedal digit is about 120 degrees, which is close to the average for all "Archaeopteryx" specimens. This arc is also close to the average for that in perching birds and is well above the mean for ground-dwelling birds, despite conclusions against perching habits based on the short hallux and weak flexor tubercles. The remarkably preserved plumage is one of many features that sets the Berlin specimen head-and-coracoids above all other "Archaeopteryx" fossils to date. Clear feather impressions are visible on both wings,
Dinosaur vision Dinosaur vision Dinosaur vision was, in general, better than the vision of most other reptiles, although vision varied between dinosaur species. Coelurosaurs, for example, had good stereoscopic or binocular vision, whereas large carnosaurs had poor binocular vision, comparable to that of modern alligators. Most carnosaurs, including "Carcharodontosaurus" and "Allosaurus", did not have very good binocular vision, comparable to modern alligators. They possessed binocular vision which was restricted to a region only 20° wide, which is understandable, as they hunted mostly large and slow prey. Their keenest sense was probably smell. Deinonychosaurs, like "Stenonychosaurus" and "Velociraptor", had better binocular vision than