120 THE MEDALS OF CREATION. Cyap. VI. 
the living ferns of the genera Lonchitis, Woodwardia, &c. 
Two have been found in the coal-measures, and one spe- 
cies in the Wealden formation of England and Germany 
(Foss. Til. For. pl. iii.) This last appears to have been a 
delicate plant ; for though fragments are very common in 
the micaceous grits and clays, any considerable portion of 
a leaf is of rare occurrence. M. Graves found the same 
fern near Beauvais in France, in strata, which, from the pre- 
gence of the fresh-water limestone called Sussex marble, are 
supposed to be referable to the Wealden epoch. This Lon- 
chopteris is widely spread through the Wealden; and occurs 
also in the Greensand. Mr. Morris first observed it in the 
iron-sandstone of Shanklin Chine.* 
Lien. 29. Fig. 1.—PHLEBoprTerist PuILuipstit. Oolite, Scarborough. 
2,.—PHLEBOPTERIS PROPINQUA, showing fructification. 
PHLEBOPTERIS (veined-leaf).  Lign. 29.— Leaves pin- 
nated ; leaflets with the margin entire, or crenulated, the 
* Geol. I. of W. 2d Ed. p.230. + Comptopteris of M. Ad. Brongniart. 
