Reports of the Princeton University Expeditions to Patagonia, 1896-1899 (Volume 5, PT. 1); J. B. Hatcher in Charge.cJohn Bell Hatcher
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Author: John Bell Hatcher
Number of Pages: 46 pages
Published Date: 03 Feb 2012
Publisher: General Books
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781235670725
File size: 42 Mb
File Name: Reports.of.the.Princeton.University.Expeditions.to.Patagonia,.1896-1899.(Volume.5,.PT..1);.J..B..Hatcher.in.Charge.pdf
Download Link: Reports of the Princeton University Expeditions to Patagonia, 1896-1899 (Volume 5, PT. 1); J. B. Hatcher in Charge
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905. Excerpt: ... pes is pentadactyl and, except in the glyptodonts, is plantigrade, while in the latter group it is semidigitigrade. No coossification occurs in tarsus, metatarsus or phalanges, and the unguals, which in the ground-sloths are large claws, in the other two orders are more or less hoof-like, completely so in the glyptodonts. DASYPODA. The Santa Cruz armadillos form a peculiar assemblage of types, very unlike, as a whole, the modern representatives of the suborder, for only one, or possibly two, species would appear to be directly ancestral to existing forms, while the majority belong to extinct lines. Some of these lines, like that of Proeutatus, for example, persisted till a much later period than the Santa Cruz, and reached their culmination in the Pampean, but have no representatives in the recent fauna, while other series, like F1g. 1. Skulls of Santa Cruz armadillos, x f. a, Stegotherium tesselatum; b, Prozaedius exilis; c, Stenotatus patagonicus; d, Proeutatus lagena. Stegotherium and the extraordinary Peltephilus, are not known to pass beyond the limits of the Santa Cruz formation. At the same time, there is a very notable diversity among these armadillos and no less than three families and seven genera have been described, most of the genera having each several species. The discovery of more complete material may reduce these numbers, but the variety will continue to be remarkable. Attention has already been called to the difference between the Santa Cruz and the recent armadillos, a difference which can be made clear in a few words. No probable forerunner of Dasypus, Priodontes, Tolypcutes, Chlamydophorus, or Tatu, has been found in these beds, though some one of the species of Prozaedius was almost certainly an ancestor of the recent Zaedyus, and ...
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