198 THE MEDALS OF CREATION. Cuap. VI. 
logical position of the mineralized dicotyledonous plants, of 
existing genera. These abound in the tertiary strata, and — 
Lien. 67. Fosstn Nuts, AND FLOWER. 
Fig. 1.—THALICTROIDES FARISENSIS: Tertiary strata, Paris. 
2.—THALICTROIDES WEBSTERI. Isle of Wight. 
3.—ANTHOLITHES LILIACEUS. Monte Bolca. 
4.—JUGLANS NUX-TAURINENSIS: fossil Walnut, Turin. 
4a.—Portion of the husk of the shell. 
4b.—The kernel, formed of calcareous spar. 
generally in an inverse ratio to the antiquity of the deposit, 
while their remains are almost wholly absent in the older 
rocks; neither have there been discovered in the Tertiary, 
any beds of vascular cryptogamia, at all approaching the 
immense accumulations in the Carboniferous formations. _ 
The most remarkable exception, is the single instance of 
a large leaf of a dicotyledonous plant in the Trias, or New 
Red sandstone, near Liverpool, described by Sir Roderick 
Murchison, which much resembles the foliage of a thick- 
ribbed Cabbage.* | 
* This fossil is named Dictyophyllwm crassinervium, by Dr. Lindley, 
Foss. Flor. pl. eci. and is figured, Sil. Syst. p. 43. 
