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Equiseta, calamites, ferns, Voltzia, and a few of the other families found so abundantly in the preceding formation, here present themselves, but in diminished size and quantity. This seems to be the proper place to advert to certain memorials of a peculiar and unexpected character respecting these early ages in the sandstones.
But more perfect specimens enabled Professor Owen, in 1858, to show that this fossil animal was a Saurian reptile, which probably fed on shell-bearing mollusks, and used its short and flat teeth, so thickly coated with enamel, for pounding and crushing the shells. Voltzia heterophylla. Portion of same magnified to show fructification. Sulzbad.
As we turn over the pages of the geological chronicle, an extraordinary change comes over the vegetation of the earth. New, stunted, hardy trees make their appearance: the Walchia, a tree something like the low Araucarian conifers in the texture of its wood, and the Voltzia, the reputed ancestor of the cypresses.
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