Specimens of Archaeopteryx the results of his investigation was a talk at the Royal Society in London in November, and was published as an abstract in the Proceedings of the Royal Society the following year. Here he considered the single feather described by von Meyer in 1861 and assigned the new skeleton the same genus. Owen speculated possible short- and long-tailed forms of "Archaeopteryx" and on these grounds assigned the London specimen the species name "macrura", meaning "long-tailed". Owen, who published a monograph on the specimen in 1863, generally considered the animal to be a bird despite describing its structure and proportions as
Specimens of Archaeopteryx the feather. "Archaeopteryx lithographica" was initially named for this original feather, rather than the full skeleton that was found around the same time, and the feather was originally the formal type specimen and holotype for the species. There are obvious problems with this idea, such as the fact that the feather may have come from a juvenile, or possibly another species altogether. The distal obtuse angle at the tip is not a feature found on the feathers of any other "Archaeopteryx" skeleton with integument imprints. It is possible, however, that the strange angle of the tip is an artifact caused