Skeleton of the Pterodactyle.
They were furnished with sharp, hooked teeth. The orbits of the eyes were very large; hence it is probable that it was a nocturnal animal, like the bat, which, at first sight, it very much resembles in the wings, and other particulars.
The word pterodactyle signifies wing-fingered; and, if you observe, you will find that it had a hand of three fingers at the bend of each of its wings, by which, probably, it hung to the branches of trees. Its food seems to have been large dragon-flies, beetles and other insects, the remains of some of which have been found close to the skeleton of the animal. The largest of the pterodactyles were of the size of a raven. One of them is pictured in the cut with the Iguanodon.
Another very curious animal which has been discovered is the Dinotherium, being of the enormous length of eighteen feet. It was an herbiferous animal, and inhabited fresh water lakes and rivers, feeding on weeds, aquatic roots, and vegetables. Its lower jaws measured four feet in length, and are terminated by two large tusks, curving downwards, like those of the upper jaw of the walrus; by which it appears to have hooked itself to the banks of rivers as it slept in the water. It resembled the tapirs of South America. There appear to have been several kinds of the dinotherium, some not larger than a dog. One of these small ones is represented in the picture with the Iguanodon.
The bones of the creatures we have been describing, were all found in England, France, and Germany, except those of the megatherium, which was found in South America. In the United States, the bones of an animal twice as big as an elephant, called the Mastodon, or Mammoth, have been dug up in various places, and a nearly perfect skeleton is to be seen at Peale’s Museum, in Philadelphia.
Now it must be remembered that the bones we have been speaking of, are found deeply imbedded in the earth, and that no animals of the kind now exist in any part of the world. Beside those we have mentioned, there were many others, as tortoises, elephants, tigers, bears, and rhinoceroses, but of different kinds from those which now exist.
It appears that there were elephants of many sizes, and some of them had woolly hair. The skeleton of one of the larger kinds, was found in Siberia, some years since, partly imbedded in ice, as I have told you in a former number.
The subject of which we are treating increases in interest as we pursue it. Not only does it appear, that, long before man was created, and before the present order of things existed on the earth, strange animals, now unknown, inhabited it, but that they were exceedingly numerous. In certain caves in England, immense quantities of the bones of hyenas, bears, and foxes are found; and the same is the fact in relation to certain caves in Germany.
Along the northern shores of Asia, the traces of elephants and rhinoceroses are so abundant as to show that these regions, now so cold and desolate, were once inhabited by thousands of quadrupeds of the largest kinds. In certain parts of Europe, the hills and valleys appear to be almost composed of the bones of extinct animals; and in all parts of the world, ridges, hills and mountains, are made up of the shells of marine animals, of which no living specimen now dwells on the earth!