The Elements of Geology; Adapted to the Use of Schools and Colleges

by Justin R. Loomis

Describe the Ichthyosaurus. The Plesiosaurus. Pterodactyle. The Iguanodon.

Where is the system developed?

What are the divisions of the Cretaceous system?

How are the layers of chalk separated?

What is the geological position of the Neocomian system, and the greensand of this country?

What are the fossils of this system?

Fig. 35.

Fig. 36.