. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds. DEFINITION OF BIEBS. 63 -the fossils so called because supposed to indicate the presence of Birds by their foot-prints, were discovered about the year 1835 in the Tria
. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds. Birds; Birds. DEFINITION OF BIEBS. 63 -the fossils so called because supposed to indicate the presence of Birds by their foot-prints, were discovered about the year 1835 in the Triassic formation in Connecticut. But the creatures which made these tracks are now reasonably believed to have been all Dinosaurian Reptiles. The oldest ornifholite, or fossil certainly known to be that of a true Bird, is the famous ArcheBopteryx, found by Andreas Wagner in 1861 in the Oolitic slate of Solenhofen in Bavaria. This has a long Uzard-like tail of twenty vertebrae, from each of which springs a well-developed feather on each side; feathers of the wings are also well preserved;. FlQ. 16. — Beatoration ot Hesperomis regalis. After Marsh. bones of the hand are not fused together, as they are in recent Birds; and the jaws bear true teeth. This Bird has served as the basis of one of the primary divisions of the class Aves; though it has many reptilian characters, it is a true Bird. The great gap between this ancient Avian and latter-day birds has been to some extent bridged by Marsh's discovery and splendid restoration of Birds from the Cretaceous formations of North America, such genera as IcMhyornis and Hesperornis forming types of 'two other primary divisions of the class, Odon- totormcB and Odontokee, or Birds with teeth in sockets, and those with teeth in grooves. In both genera the tail is short, as in ordinary birds. In IcMhyornis, though the. wings are. Please note that these images are extracted from scanned page images that may have been digitally enhanced for r
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
