THE RUMFORD PRESS
CONCORD · N · H ·
CONTENTS
| CHAPTER | PAGE | |
| I. | Organization of the expedition—history of the work | |
| done in the Deseado formation | [ 1] | |
| II. | Description of the Amherst locality—age of the overlying | |
| beds—age of underlying beds—age of Deseado | [ 6] | |
| III. | Table of the animals—study of the feeding habits— | |
| character of the habitat—the origin of the elements | ||
| of the Deseado fauna | [19] | |
| IV. | Systematic arrangement—the Litopterna, Eoproterotherium, | |
| Notodiaphorus, Deuterotherium, Protheosodon, | ||
| Coniopterotherium, Tricoelodus, Proadianthus | [28] | |
| V. | Typotheria, Archaeohyrax, Plagiarthrus, Prohegetotherium, | |
| Prosotherium, Propachyrucos, Phanophilus, | ||
| Archaeophylus, Eutrachytherus, Argyrohyrax, | ||
| Isoproedrium | [53] | |
| VI. | Rhynchippidae, Toxodontia, Rhynchippus, Morphippus, | |
| Eugeniops | [86] | |
| VII. | Leontinirdae, Leontinia, Ancylocoelus | [108] |
| VIII. | Nesodontidae, Proadinotherium, Pronesodon, Coresodon, | |
| Interhippus, Nesohippus | [122] | |
| IX. | Isotemnidae, Trimerostephanus, Pleurocoelodon, Lophocoelus, | |
| Henricofilholia | [129] | |
| X. | Homalodontotheria, Asmodeus | [134] |
| XI. | Astrapotheria, Parastrapotherium | [142] |
| XII. | Pyrotheria, Pyrotherium | [156] |
| XIII. | Rodents, Cephalomys, Scotamys, Litodontomys, Asteromys, | |
| Eosteiromys | [185] | |
| XIV. | Edentata, Proeutatus, Prozaedius, Stenotatus, | |
| Proeuphractus, Peltephilus, Palaeopeltis, Glyptatelus, | ||
| Hapalops, Octodontotherium, Orphodon | [197] | |
| XV. | Marsupialia, Pharsophorus, Notogale, Proborhyaena, | |
| Palaeothentes, Pilchenia, Callomenus, Pseuhalmarhippus, | ||
| Parabderites | [210] | |
| XVI. | Birds, Physornis, Loxornis | [225] |
PREFACE
The results of the Amherst Patagonian Expedition were divided into two parts, the general features, together with the narrative, were reported in a separate volume entitled, “Hunting Extinct Animals in the Patagonian Pampas,” published in 1913. For this volume has been reserved the description of the material found and such conclusions as are directly derived from that material. The material on which this work is based has been prepared out and placed on exhibition at Amherst College.
The material here described forms a unified body of data, which adds materially to our knowledge of the complete animals of the Tertiary period in Patagonia. There are beside this some small collections which offer some isolated new facts, but the working up of these has been reserved for the future for small articles, as the work may come to maturity.
The field has only been touched and a vast amount of further work can be profitably done on the horizons immediately preceding and following the one described in this volume, after which an interesting study can be made on the evolution of a fauna which developed in a considerable degree of isolation.
F. B. Loomis.
March 18, 1914.