File:Natural history (1919) (14778604821).jpg

Identifier: naturalhistory07ameruoft (find matches)
Title: Natural history
Year: 1919 (1910s)
Authors: American Museum of Natural History
Subjects: Natural history
Publisher: New York : American Museum of Natural History
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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ued theexploration of the Eocene formations of Wyoming, working this yearprincipally in the Washakie Basin. A number of fine specimens wereobtained of the characteristic large mammals of this formation, theEobasileus, largest and last of the uintathere race. Amynodon, the firstof the rhinoceroses, Achcenodon, a gigantic pig-like animal, Puinofclis,a large and powerful carnivore, and of the Eocene ancestors ^^ theTitanotheres, besides skulls and skeletons of several of the smaller VERTEBRATE PALAEONTOLOGY 7 carnivora, rodents and other forms. Many of these will be new toscience and all of them will aid greatly in rilling out our collectionsfrom the later Eocene. Mr. Granger paid much attention to the strati-graphy of the formation, and the origin of the materials composing it,obtaining data which, with the collections of fossils secured at differentlevels, will enable us to li\ accurately the time relations of the Washa-kie to the Bridger and Uinta formations (Middle and Upper Eocene).
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SCENE IN WASHAKIE BASIN The third expedition was conducted by -Mr. Albert Thomson in theLower Miocene of South Dakota. The formations of this age in theWestern States are in general very barren of fossil mammals and havebeen but little explored, although the formations above and beneaththem have yielded large collections to the explorations of the past half-century. By dint of diligent and thorough search Mr. Thomson suc-ceeded in getting from these unpromising beds a considerable collectionof skulls and skeletons, nearly all of them new to science and repre-senting an intermediate stage between the Oligocene and later Miocene. Among the interesting novelties of this collection is a fragmentaryskeleton of a gigantic Wolverene as large as a jaguar or a black bear. 8 THE AMERICAN MUSEUM JOURNAL It was much the largest of the weasel family and was a truly formida-ble beast of prey, if it possessed the savage and bloodthirsty dispositionof its modern relative-. Professor Osborn, under who

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