A Pictorial Atlas of Fossil Remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology."

by Gideon Algernon Mantell

This genus is subdivided in the first number into two sub-genera, but this division is not noticed in the additional species quoted in the succeeding numbers.

Lepidotæ.—Scales convex.

Alveolariæ.—Scales sub-concave.

2. Variolariæ.—Stem shield-bearing, or warty; shields leaf-bearing, surrounding the stem spirally.

3. Calamitæ.—Stem striated, intercepted with sutures at the articulations.

4. Syringodendron.—Stem arborescent, in the form of pipes agglutinated together, with naked glandules surrounding the stem spirally.

In the second number the following genera are given:—

5. Rhytidolepis.—Stem arborescent, streaked longitudinally with elevated wrinkles; shields
surrounding the stem spirally.

6. Flabellaria.—Leaves part stalked, divided and expanded like a fan.

7. Schlotheimia.—Stem jointed, contracted at the articulation, verticillate.