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Nor can it be pretended that it is an immutable law that marsupials should have been chiefly or solely produced in Australia; or that Edentata and other American types should have been solely produced in South America.
Darwin, in support of such a law of concomitant variation as regards hair and teeth, brings forward the case of Julia Pastrana, and a man of the Burmese Court, and adds, "These cases and those of the hairless dogs forcibly call to mind the fact that the two orders of mammals, namely, the Edentata and Cetacea, which are the most abnormal in their dermal covering, are likewise the most abnormal either by deficiency or redundancy of teeth."
At Coy Inlet the high plain trends inland, leaving flat-topped outliers. This formation is highly remarkable, from abounding with mammiferous remains, which have not as yet been examined by Professor Owen, but which include some large, but mostly small, species of Pachydermata, Edentata, and Rodentia.
Did man, after his first inroad into South America, destroy, as has been suggested, the unwieldy Megatherium and the other Edentata? We must at least look to some other cause for the destruction of the little tucutuco at Bahia Blanca, and of the many fossil mice and other small quadrupeds in Brazil.
In like manner, among the mammalia we find in Australia not only living kangaroos and wombats, but fossil individuals of extinct species of the same genera. So also there are recent and fossil sloths, armadilloes and other Edentata in South America, and living and extinct species of elephant, rhinoceros, tiger, and bear in the great Europeo-Asiatic continent.
The relationship, though distant, between the Macrauchenia and the Guanaco, between the Toxodon and the Capybara, the closer relationship between the many extinct Edentata and the living sloths, ant-eaters, and armadillos, now so eminently characteristic of South American zoology, and the still closer relationship between the fossil and living species of Ctenomys and Hydrochaerus, are most interesting facts.
Nor have I heard of any species in the Orders of Cheiroptera, Edentata, Insectivora and Rodents being polygamous, excepting that amongst the Rodents, the common rat, according to some rat-catchers, lives with several females. Dr. See Dr.
In less than half an hour the hunters had all the game they required. Robert had killed a curious animal belonging to the order EDENTATA, an armadillo, a sort of tatou, covered with a hard bony shell, in movable pieces, and measuring a foot and a half long. It was very fat and would make an excellent dish, the Patagonian said. Robert was very proud of his success.
It is covered with scales; and, to look at it, you would say it was a reptile, in spite of its higher internal organization. As for teeth, it has certainly enough of them to give the lie to its name of edentata; but they are not very serviceable ones.
And I am greatly disposed to look for the common root of all the Ungulata, as well, in some ancient non-deciduate Mammals which were more like Insectivora than anything else. On the other hand, the Edentata appear to form a series by themselves.
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