Specimens of Archaeopteryx precipitated the first surge of widespread knowledge of the specimen across Europe. In the subsequent years of the 19th century, the London specimen was subject to a number of analyses by other researchers of historical importance, including Thomas Huxley, Othniel Charles Marsh, Wilhelm Dames, and Bronislav Petronievics. Much of this early study was relevant to controversy surrounding the possible taxonomic divisions of "Archaeopteryx" specimens. The London specimen is of obvious special importance because it was the first "Archaeopteryx" skeleton discovered. By coining the name "Archaeopteryx", meaning "ancient wing", von Meyer had declared the animal to be a bird. Despite the
Specimens of Archaeopteryx suggest that it had some black colouration which included the coverts (or possibly the secondary remiges). Carney pointed out that this is consistent with what we know of modern flight characteristics, in that black melanosomes have structural properties that strengthen feathers for flight. The preservation of the fossil feather is unusual. In contrast to the feather imprints found on the full skeletons of "Archaeopteryx", the isolated feather is preserved as a dark film, which could be composed either of organic matter (as in most fossil feathers) or as inorganic minerals. Though it is theoretically possible to determine which it is,