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Peter's Mount, in the suburbs of Maestricht, abounds in corals and Bryozoa, often detachable from the matrix; and these beds are succeeded by a soft yellowish limestone 50 feet thick, extensively quarried from time immemorial for building. The stone below is whiter, and contains occasional nodules of grey chert or chalcedony. Mosasaurus Camperi. Hemipneustes radiatus, Ag. Spatangus radiatus, Lam.
Had it been declared that we are living in the Eocene epoch, the idea would not be so extravagant, for the great reptiles of the Upper Chalk, the Mosasaurus, Pliosaurus, and Pterodactyle, and many others, as well as so many genera of chambered univalves, had already disappeared from the earth, and the marine fauna had made a greater approach to our own by nearly the entire difference which separates it from the fauna of the Cretaceous seas.
The remains of the fossil Alligator, known as the mosasaurus, are also here, together with the wealden lizard of Kent, which was about twenty-five feet in length, and part of Cuvier's wonderful fossil Flying Lizard, or sterodactylus, which is described as a reptile having mammalian characteristics, a bat's wings, enormous eyes, and a bird's neck.
The Ichthyosaurus, Pterodactyl, and Mosasaurus were of coeval date with the oak, the walnut, and the fig. Speculations have often been hazarded respecting a connection between the rarity of Exogens in the older rocks and a peculiar state of the atmosphere.
Fish of the genera Lamna, Galeus, and Carcharodon are common to New Jersey and the European cretaceous rocks. So also is the genus Mosasaurus among reptiles. It appears from the labours of Dr.
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