Abstract
TO vol. xxii. (pp. 407–420) of the Bulletin of the American Museum of Natural History Prof. H. F. Osborn contributes two articles on the skulls of ungulates from the Wind River Lower Eocene of Wyoming. A very interesting point is that in the members of the family Uintatheriidae chacteristic of this stage, such as Bathyopsis, the skull lacks the great bony horn-cores of the later types, their place being taken by small knobs. In the perissodactyle Titanotheriidae it has been found that two phyla of the genus Eotitanops are recognisable, one comprising relatively small, persistently primitive light-limbed species, and the other animals of a larger and more progressive type. Several new species are named.
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L., R. Papers on Vertebrate Palontology . Nature 92, 514 (1914). https://doi.org/10.1038/092514a0
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DOI: https://doi.org/10.1038/092514a0