46 



GUIDE TO LOCALITIES 



be neglected in studying this area. Many of the richest fossili- 

 ferous sections are small in extent, as, for instance, Grignon 

 and La Ferme de I'Orme ; in some instances roadside cut- 

 tings, of a few feet in height, are crowded with splendid species, 

 as at Mouchy ; in other cases, the surfaces of the fields are 

 covered with specimens, as at La Frileuse, near Grignon, and 

 St. Sulpice, near Ver. At the former, very fine specimens of 

 CerilhiuDi serratnvi can be obtained, turned up by the plough. 

 In short, every sabiicre, cocjui/Jage, and carricre, should l)e ex- 

 amined. 



PARIS CENTRE. 



Taking Paris as our first centre, the principal points to study 

 in the vicinity are the following. The most fossiliferous are 

 marked X. 



Montmartre 



Argenteuil 



Sannois . 



La Frette-sous-Cormeill 



Sartrouville 



Mcntigny 



Herblay . 

 X Reauchamp 



Frepillon 



St Ouen 



Enghien 



Montmorency 



Mery 

 X Auvers . 

 X Valmrndois 



Auteuil . 



Nanterre 



Carri^res St. Deni 



Pantin . 



Romainville 



Bry-sur-Marne 



Champign3'-sur-Marne 



Villeparisi: 



Vaugirard 



Issy 



Meudon 



Montroiige 



Gentilly 



Arcueil . 



Distance and 



Dinction from 



Paris. * 



N. 



N.W. 



N.W. 



N.W. 

 10 N.W. 

 12 N.W. 

 I2i N.W. 

 Ill N.W. 

 isl N.W. 

 ' N. 



N. 



N. 



N.W. 

 i7i N.W. 

 i8" N.W. 



W. 



w. 

 w. 



N.E. 



N.E. 



E. 



S.E. 



N.E. 



S.W. 



S.W. 



S W. 



s. 



s 



9 



4 

 8i 



lO 



i6i 



4 



7 



8.! 



4 

 4i 

 9 

 9 

 14 



2^ 



4i 

 5 



4 



4 



Gypsum. 



St. Ouen Limestone. 

 Calcaire Glossier, (S;c. 

 Gypsum. 



Sables Moyens. 



Gypsum. 



St. Ouen Limestone. 



Gypsum. 



Beauce Limestone. 



Sables Moyens, &c. 



Plastic Clay, &c. 

 Marls of Nanterre. 

 Calcaire Grossier. 

 Gypsum. 



Champigny Limestone. 

 Gypsum. 



Calcaire Grossier. 

 Plastic Clay, &c. 

 Marls of Meudon, &c. 

 Calcaire Grossier. 



Montmartre. — This celebrated hill in the north of Paris 

 furnished the classic quarries of Gypsum, and provided Cuvier 

 with the chief material for his Ossemens fossi/es. The beds 

 are very varied in character and thickness. The mammalia were 



* Distances in English miles from ihc centre of P.^ris, r.iid as the crow flies. 



