﻿82 Reviews — Seer's Primceval World of Switzerland. 



Bivalves and Grasteropods, its Corals, Sponges, Sea-urchins, and 

 Fentacrinites, down, down to the Globigerina ooze. 



An interesting feature of the work is the introduction of a series 

 of maps giving in outline the probable relations of sea and land in 

 Jurassic, Cretaceous, and Miocene times in Central Europe. 



Fig. 2. Central Europe in the Jiu'assic Period. The continents are white ; the 

 shaded parts represent the sea. (Fig. 97, p. 168, Heer.) 



Undoubtedly the most wonderful record of the life-history of the 

 Jurassic Period has been preserved to us in those remarkable quarries 

 in the Lithographic Stone of Eichstadt, Pappenheim and Solenhofen, 

 near Munich in Bavaria. 



Here comparatively thin-bedded limestones are exposed, which 

 have evidently resulted from a long-continued supply of extremely 

 fine and homogeneous mud derived from the disintegration of ad- 

 jacent land by some great river system bringing down vast quanti- 

 ties of wasted Magnesian and more recent Ehastic limestones, whose 

 commingled sediments, especially in their thinner and probably more 

 shoal-water depositions, reveal to us the near presence of land teem- 

 ing with life, as attested by large Dragon-flies, Beetles, Hemipterous 

 insects, long and short-tailed Pterodactyls and Land-lizards, and that 

 remarkable bird the ArclicBopteryx} Numerous Coniferm are evidenced 

 by detached branches and remains of cones, some of which have 

 been described by Prof. Dyer in the pages of this Magazine.'^ These, 

 with abundance of Fishes, Crustacea, and Mollusca, make up a mar- 

 vellously rich record of Upper Jurassic life ; and the geologist who 



1 Preserved in the British Museum, and described by Prof. Owen in the Phil. 

 Trans. 1863, p. 33, pi. 1. 



"^ See paper on some Coniferous Remains from the Lithographic Stone of 

 Solenhofen, by Prof. W. T. Thiseltou Dyer, B.A., B.Sc, F.L.S., Gbol. Mag. 1872, 

 Vol. IX. pp. 150, 193, PI. v., etc. 



