. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. OLIGOCENE OF EUROPE, NORTH AFRICA, AND NORTH AMERICA 213 the varied structure of the horses. Titanotherium, for example, being a slender-hmbed, and swift-moving, animal, may have cultivated a grazing habit, while Brontotherium (Fig. 97) was a heavy-limbed, slow-moving quadruped armed with gigantic horns and teeth of a relatively short- crowned, browsing type. The titano- theres now reach the climax of their evolution and become extinct with apparent suddenness. Two members of this^family have been discovered
. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. OLIGOCENE OF EUROPE, NORTH AFRICA, AND NORTH AMERICA 213 the varied structure of the horses. Titanotherium, for example, being a slender-hmbed, and swift-moving, animal, may have cultivated a grazing habit, while Brontotherium (Fig. 97) was a heavy-limbed, slow-moving quadruped armed with gigantic horns and teeth of a relatively short- crowned, browsing type. The titano- theres now reach the climax of their evolution and become extinct with apparent suddenness. Two members of this^family have been discovered in Europe. They are (1) Brachydiastematherium trans- SylvaJliaim from the vicinity of Andra- By permission ot the Geological Survey. shaza Klausenburg, TranSSylvania, in Fig. lOl. —Scale section of the Oligocene Hungary, comparable to om Proti- Sa^kSa^'^'lft^rWoVtml^^ tanotherium; (2) 'Titanotherium' ru- melicxim Toula, from Bulgaria. Probably a member of the sub-family Titanotheriinae {fMegacerops). The faunal group as a whole is exhibited in the following conspectus:. Leptauchenia „ clays'" emazone Protoceras sandstones" Oreodon clays" Me tamynodon sandstones''^ Titanotherium clays and one sandstones" Characteristic Mammals Opossums Leptictids Hyaenodonts True canids Mustelids Machaerodont cats Surviving Eocene rodents (ischyromyids) Hcteromyids Leporids (hares) Hyracodonts Amynodonts Aceratheres Diceratheres Lophiodonts Horses Clialicotheres Titanotheres Entclodonts Dicotylids Lpptochrcrids Anthi'acotheres Camels Hypertragulids (hornless) This group seems to be much richer in peris- sodactyls than that of the Lower Oligocene of western Europe, especially in the presence of the cursorial rhinoceroses or hyracodonts, of the horses, of surviving slender-limbed lophiodonts (Colodon), as well as of the great titanotheres. Beside the hyracodont and amynodont rhinoc- eroses the true rhinoceroses appear, probably both the acerathere and dicerathere ance
Size: 1564px × 1598px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectpaleontology, bookyea
