. Bird-life : a guide to the study of our common birds. Birds -- United States; Birds -- United States Pictorial works. ANCESTORS OF BIRDS. It is unnecessary to discuss here the relationships of the birdlike reptiles, but, as the most convincing argument in support of the theory of the reptilian descent of birds, I present a restoration of the Archa?optervx, the earliest known progenitor of the class Aves. This restoration is. 1.—Restorationof the Archfooptcryx, a toothed, reptilelike bird of the Jurassic period. (About "/s natural size.) based on an examination of previous restorations i
. Bird-life : a guide to the study of our common birds. Birds -- United States; Birds -- United States Pictorial works. ANCESTORS OF BIRDS. It is unnecessary to discuss here the relationships of the birdlike reptiles, but, as the most convincing argument in support of the theory of the reptilian descent of birds, I present a restoration of the Archa?optervx, the earliest known progenitor of the class Aves. This restoration is. 1.—Restorationof the Archfooptcryx, a toothed, reptilelike bird of the Jurassic period. (About "/s natural size.) based on an examination of previous restorations in con- nection with a study of the excellent plates which have been published of the fossils themselves.* Two speci- mens have been discovered ; one being now in the British Museum, the other in the Berlin Museum. They were both found in the lithographic slates of Solenhofen, in Bavaria, a formation of the Jurassic period, and, together, furnish the more important details of the structure of this reptilelike bird. This restoration, therefore, while doubtless inaccurate * For recent papers on the Archteopteryx see Natural Science (Macmillan Co.), vols, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, Frank M. (Frank Michler), 1864-1945; Seton, Ernest Thompson, 1860-1946. New York : Appleton
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbirdsunitedstates
