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A considerable number are pachydermata, of a character approximating to the South American tapir: the names, palaeotherium, anthracotherium, anoplotherium, lophiodon, &c., have been applied to them with a consideration of more or less conspicuous peculiarities; but a description of the first may give some general idea of the whole.
Or lastly, in what circumstance is the Phascolotherium more embryonic, or of a more generalised type, than the modern Opossum; or a Lophiodon, or a Paloeotherium, than a modern Tapirus or Hyrax?
How are the Cretaceous Ichthyosauria, Plesiosauria, or Pterosauria less embryonic, or more differentiated, species than those of the Lias? Or lastly, in what circumstance is the 'Phascolotherium' more embryonic, or of a more generalized type, than the modern Opossum; or a 'Lophiodon', or a 'Paleotherium', than a modern 'Tapirus' or 'Hyrax'?
Or lastly, in what circumstance is the Phascolotherium more embryonic, or of a more generalized type, than the modern Opossum; or a Lophiodon, or a Palæotherium, than a modern Tapirus or Hyrax?
A true crocodile, also, Crocodilus toliapicus, and another saurian more nearly allied to the gavial, accompany the above fossils; also the relics of several birds and quadrupeds. One of these last belongs to the new genus Hyracotherium of Owen, of the hog tribe, allied to Chaeropotamus, another is a Lophiodon; a third a pachyderm called Coryphodon eocaenus by Owen, larger than any existing tapir.
Looming no further back in the geological records than the Tertiary Period, the Oregon of that time looks altogether strange in the few suggestive glimpses we may get of it forests in which palm trees wave their royal crowns, and strange animals roaming beneath them or about the reedy margins of lakes, the oreodon, the lophiodon, and several extinct species of the horse, the camel, and other animals.
In 1800 he finds a few teeth, in following years a few bones; and after many years' patience and skill he ascertains and demonstrates the existence and place of a number of tapir-like animals which he classed as Lophiodon Paleotherium and Anoplotherium, formerly abounding on the banks of the ponds which have left their mud and marl in the tertiary strata of the Paris basin.
The upper division of this group consists in great part of beds of compact, fragile limestone, with some intercalated green marls. The shells in some parts are a mixture of Cerithium, Cyclostoma, and Corbula; in others Limnea, Cerithium, Paludina, etc. In the latter, the bones of reptiles and mammalia, Palaeotherium and Lophiodon, have been found.
How are the Cretaceous Ichthyosauria, Plesiosauria, or Pterosauria less embryonic, or more differentiated, species than those of the Lias? Or lastly, in what circumstance is the 'Phascolotherium' more embryonic, or of a more generalized type, than the modern Opossum; or a 'Lophiodon', or a 'Paleotherium', than a modern 'Tapirus' or 'Hyrax'?
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