Proceedings of the Academy of Natural Sciences of Philadelphia, المجلد 11Academy of Natural Sciences of Philadelphia, 1860 "Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794. |
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2d series abdomen Acad Academy anal fin antennæ anteriorly antice apical areolet band basal base belong bird blackish body bones brownish Camma Cassin caudal fin characters cilia cinereous collection color costal coverts coxæ crania cross-vein dark brown discal distinct dorsal fin elytris Erioptera feet female femora forceps Fore wings Fort Riley fossil fuscous Fusulina genera genus gray head inches infuscated iridescente Isaac Lea joints Jour Kreide von Texas larvæ lateribus limestone male margin mediastinal mediastinal vein Meig metathorax middle Moonda Mosasaurus nearly occipital Ogobai ovipositor pale palpi pectorals petiole posterior posteriorly postice present proboscis Proc Prof punctatis Pygidium radial river rotundatis scales scutellum side silvery skull slender species specimens spots stigma streak stria striis stripes subcostal tail tawny teeth Tejon thorax tibiæ total length upper valdè valvulis ventrals yellow yellowish Zool
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الصفحة 29 - Arkansas rivers, south of this, we found the soil rich and supporting a dense growth of grass ; and from all we could learn from persons who have gone further out, the same kind of country extends for a long distance beyond this, towards the west. Hence we infer that the belt of unproductive lands between the rich country on the east, and the eastern base of the Rocky Mountains on the west, is much narrower than is generally supposed ; and even this so-called desert country is known to possess a...
الصفحة 189 - North Carolina. Dr. DeKay, in speaking of such remains, says, ' they resemble those of the common horse, but from their size apparently belonged to a larger animal,' and he refers them to a species with the name of ./•''/««.•>• major.
الصفحة 190 - The specimens present so much difference in condition of preservation, or change in structure; ao much variation in size, from that of the more ordinary horse to the largest English dray horse; and such variableness in constitution, from that of the recent horse to the most complex condition belonging to any extinct species described, that it would be about as easy to indicate a half dozen species as it would two. " Under the circumstances, I would characterize the extinct horse of the United States...
الصفحة 189 - ... their beds, and become mingled with the remains of recent indigenous and domestic animals, and objects of human art; so that when a collection is made in this locality, it is sometimes difficult to determine whether the animal remains belong to the formations mentioned or not. Generally, however, we have been able to ascertain where the fossils belong, which we have had the opportunity of examining, from the fact that the greater number were obtained from the deposits referred to in digging into...
الصفحة 189 - ... and domestic condition, throughout North and South America, did not inhabit these continents at the time of their discovery by Europeans. With this fact in view, in conjunction with the circumstance that animal remains of late periods may become accidental occupants of earlier geological formations, we should require strong evidence to be advanced before it is admitted that the horse belonged to an ancient fauna of the western world. At the present time the evidence appears to be sufficiently...
الصفحة 190 - ... ordinary horse to the largest English dray horse; and such variableness in constitution, from that of the recent horse to the most complex condition belonging to any extinct species described, — that it would be about as easy to indicate a half dozen species as it would two. " Under the circumstances, I would characterize the extinct horse of the United States as having had about the same size as the recent one, ranging from the more ordinary varieties to the English dray horse, with molar...
الصفحة 194 - ... circumstances under which these remains are found, admit of no doubt but the animals from which they are derived existed in North America long before this continent was settled by the white race of men, together with animals which to this day are common in the same localities, such as the deer, the musk-rat, the opossum and others only now found in South America, such as the tapir. This shows, beyond the possibility of a controversy, that...
الصفحة 188 - The collections of these gentlemen consist of a most remarkable intermixture of remains of fishes, reptiles and mammals, of the three periods mentioned ; and in many cases perhaps we may err in referring a particular species to a certain formation, more especially in the case of the fishes. The remains usually consist of teeth often well preserved, but frequently in small fragments, more or less water worn ; and most of the fossils are stained brown or black.
الصفحة 29 - Riley comparatively sterile; on the contrary, however, we were agreeably disappointed at meeting with scarcely any indications of decreasing fertility as far as our travels extended, which was about sixty miles west of Fort Riley. Here we found the prairies clothed with a luxuriant growth of grass, and literally alive with vast herds of buffalo that were seen quietly grazing as far as the eye could reach in every direction. Even on the high divide between the Smoky Hill and Arkansas rivers, south...
الصفحة 25 - Hills, down through several hundred feet of intermediate doubtful strata, so as to include the beds containing permian types of fossils, and a considerable thickness of rocks in which we find great numbers of upper coal measure forms. We have preferred to give the section in this form because, in the first place, the upper coal measures of this region pass by such imperceptible gradations into the permian above, that it is very difficult to determine, with our present information, at what particular...