Essay on the Theory of the Earth

by baron Georges Cuvier

I have not seen the slightest trace of them in our gypsum quarries; and all that has come to my hands consists of some fragments of a deer, of the size of the roe, but of a different species, collected among the palæotheria of Orleans[278]; and of one or two other small fragments, from Switzerland, which, however, are perhaps of doubtful origin.

But our pachydermata have not for all this been the only inhabitants of the countries in which they lived. In our gypsum deposits, at least, we find along with them carnivora, glires, several sorts of birds, crocodiles, and tortoises; and these two latter genera also accompany them in the molasse sandstones and marly deposits of the middle and south of France.

At the head of the carnivora, I place a Bat, very recently discovered at Montmartre, and which belongs to the proper genus Vespertilio[279]. The existence of this genus, at an epoch so remote, is so much the more surprising, that, neither in this formation, nor in those which have succeeded it, have I seen any other trace, either of cheiroptera or of quadrumana: no bone or tooth of either monkey or maki has ever presented itself to me, in the course of my long researches.

Montmartre has also furnished the bones of a fox different from ours, and which also differs from the jackals, isatises, and the various species of foxes peculiar to America[280]; those of a carnivorous animal allied to the raccoons and coaties, but larger than any known species[281]; those of a particular species of civet[282]; and of two or three other carnivora, which it has not been possible to determine, from the want of tolerably complete portions.

What is still more remarkable, is, that there are skeletons of a small sarigue, allied to the marmose, but different, and consequently of an animal belonging to a genus which is at the present day confined to the New World[283]. Skeletons of two small glires, of the genus myoxus[284], and a skull belonging to the genus sciurus[285], have also been collected.

Our gypsum deposits are more fertile in bones of birds than any of the other strata either anterior or posterior to it. Entire skeletons, and parts of at least ten species belonging to all the orders, are found there[286].

The crocodiles of the period in question approach our common crocodiles in the form of the head, while, in the deposits of the Jura period, we find only species allied to the gavial.

A species has been found at Argenton, which is remarkable for its compressed, sharp teeth, having their edges dentated like those of certain monitors[287]. Some remains of it also occur in our gypsum quarries[288].

The tortoises of this period are all fresh-water ones: some of them belong to the subgenus Emys; and there are species, both at Montmartre[289], and still more especially in the molasse sandstones of the Dordogne[290], which are larger than any living species known; the others are Trionyces or soft tortoises[291]. This genus, which is easily distinguished by the vermiculate surface of the bones of its shell, and which at present exists only in the rivers of warm countries, such as the Nile, the Ganges, and the Orinoko, has been very abundant in the places where the palæotheria lived. Vast quantities of its remains are found at Montmartre[292], and in the molasse sandstones of the Dordogne, and the other gravel deposits of the south of France.