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. 1913 Excerpt: ...which gives its name to the family, is so like the American forms that by most writers the White River species are referred to it. It is of interest to note that the fgiant pigs have also been found in the marine Miocene of New Jersey, one of the few records of the Tertiary land mammals of the Atlantic seaboard. At ...
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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. 1913 Excerpt: ...which gives its name to the family, is so like the American forms that by most writers the White River species are referred to it. It is of interest to note that the fgiant pigs have also been found in the marine Miocene of New Jersey, one of the few records of the Tertiary land mammals of the Atlantic seaboard. At present, the fentelodonts proper cannot be traced back of the lower White River beds, nor are they found in any more ancient formations in Europe. It is, therefore, probable that they were immigrants in both of these continents, presumably from Asia. The whole Eocene of North America had a series of pig-like animals, called the fachaenodonts or fshort-faced pigs, which seem to have been related to the fentelodonts. They ended their career in the Uinta just before the appearance of the fentelodonts, and it would be natural to suppose that the latter were descended from them. If, however, the principle that an organ or structure once lost can never be regained, is valid, then there can be no relation of ancestor and descendant between the Fig. 195.--Skull of tshort-faced pig (fAchienodon robustus) from the Bridger Eocene. Princeton University Museum. two groups, for of the fachaenodonts, even their most ancient representatives had lost the first premolar, giving the formula pf, while in the fentelodonts it is constantly pf. The fachaenodonts, which are much less fully known than the fentelodonts, had teeth very similar in form to those of the latter; and their most conspicuous feature was the shortness of the face and jaws, as contrasted with the extreme elongation of these parts in the fentelodonts, nor did they have the bony flaps under the eyes or the knobs on the lower jaw which gave such a fantastic appearance to the fentelodont skull. Little ...
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