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,
Archaeopteryx be given preference over "lithographica" in instances where scientists considered them to represent the same species. It has been noted that the feather, the first specimen of "Archaeopteryx" described, does not correspond well with the flight-related feathers of "Archaeopteryx". It certainly is a flight feather of a contemporary species, but its size and proportions indicate that it may belong to another, smaller species of feathered theropod, of which only this feather is known so far. As the feather had been designated the type specimen, the name "Archaeopteryx" should then no longer be applied to the skeletons, thus creating significant nomenclatorial