. Cope papers, 1871-[1897. Zoology; Paleontology. 200 B. NATTJEAL HISTOET. etal. (See figs. 2, 3, Sq.) Though it cannot yet be asserted that this is one primary element, yet in the adult Ichthyosaurus there is. Cranium of Ichthyosaurus without arches. Col, Columella. Pt, Pterygoid. (The anterior extremity of the sphenoid is imperfect.). 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 Cope, E. D. (Edward Drinker), 1840-1897.


. Cope papers, 1871-[1897. Zoology; Paleontology. 200 B. NATTJEAL HISTOET. etal. (See figs. 2, 3, Sq.) Though it cannot yet be asserted that this is one primary element, yet in the adult Ichthyosaurus there is. Cranium of Ichthyosaurus without arches. Col, Columella. Pt, Pterygoid. (The anterior extremity of the sphenoid is imperfect.). 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 Cope, E. D. (Edward Drinker), 1840-1897. Philadelphia, etc.


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