. Elements of geology : a text-book for colleges and for the general reader. Geology. 446 MESOZOIC ERA—AGE OF REPTILES. lar combination of bird and reptilian characters have been made out. Among bird characters are (1.) The strong shoulder-girdle and keeled. Fig. 703.—Archaeopteryx macroura, Berlin specimen (after Seeley). sternum necessary for flying (but Pterosaurs also have these). (2.) A horny beak (but turtles and Rhynchosaurs and some Dinosaurs have this). (3.) Tridactyl feet (some Dinosaurs have these). (4.) Feath- ered wings and tail. But, along with these, besides the toothed jaivs an
. Elements of geology : a text-book for colleges and for the general reader. Geology. 446 MESOZOIC ERA—AGE OF REPTILES. lar combination of bird and reptilian characters have been made out. Among bird characters are (1.) The strong shoulder-girdle and keeled. Fig. 703.—Archaeopteryx macroura, Berlin specimen (after Seeley). sternum necessary for flying (but Pterosaurs also have these). (2.) A horny beak (but turtles and Rhynchosaurs and some Dinosaurs have this). (3.) Tridactyl feet (some Dinosaurs have these). (4.) Feath- ered wings and tail. But, along with these, besides the toothed jaivs and long tail of reptiles, already mentioned, there were also the following characters: 1. The metatarsals (three in number) were separate, as in reptiles and embryo of birds. 2. The pelvic bones were unconsolidated, as in reptiles and embryo of birds. 3. The three fingers were all free and armed with claws. So complete is the mix- ture of the two kinds of characters that some zoologists (Vogt) be- lieve that the reptilian characters predominate, and that it should be. 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 LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892
