Revieios — Lemoine's Geologie du Bassin de Paris. 171 



I. — Geologie du Bassin de Paris. Par M. Paul Lemoine. 8vo ; 

 pp. ii, 408, with 9 plates and 136 text -illustrations. Paris, 

 Hermann & Fils ; London, Dulau & Co., 1911. Price 15 fr. 



{Second notice, continued from p. 136.) 



THE Portlandian strata comprise, in the upper part, estuarine 

 deposits and fluvio-lacustrine beds with fossils that would 

 connect them with our Puibeck Beds. These latter, however, are 

 not separately recognized, being regarded as the upper part of the 

 Portlandian. 



The Lower Cretaceous formations commence with the Aquilonian 

 and Wealdian, which represent the continental facies of the Neocomian. 

 The Aquilonian consists of clays, sands, and iron-ore, in general not 

 fossiliferous. In the Boulonnais there appears in places to be a passage 

 from Portlandian to Aquilonian, but as a rule there is great discordance. 



In the Paris Basin the following divisions in descending order 

 are made : — 



CEETACEOUS. 

 MONTIAN 



Danian 



Senonian : 



TURONIAN 



Zones 



Zones 



grouped together as ' Calcaire pisolitique ' . 

 i Aturian. 



Cenomanian : Zones 



Albian : 



iBeletnnitella mucronata 

 B. quadrata 

 Micraster cor-anguinum \ Emscherian. 

 M. decipiens ' j 



( Holaster planus. 

 Inoceramus labiatus. 

 Belemnites (Actinocamax) planus. 

 Schloenbachia varians and AcantJioceras 

 rotomagense. 

 { Scaphites cequalis. 

 L Schloenhacliia inflata. 

 Zones \ Hoplites interruptus. 



\ Douvilleiceras mamillare. 

 r, I Exogyra sinuata. 

 ^^^ \ Terebratella Astieriana. 

 Argiles bigarrees. 



Calcaire a Spatangues (facies marin) . 

 Aquilonian and Wealdian (facies continental). 



This grouping (apart from zones) is the same as that given in the 

 British Museum Guide to the Fossil Mammals and Birds (1909). 



The ISTeocomian consists of marine beds {calcaire a Spatangues) and 

 lacustrine strata, "which include those of Bernissart in Belgium, with 

 Iguanodon. 



The Barremian also includes both marine and lacustrine strata, 

 mottled clays and sands, and oolitic iron-ore, with Ostrea Leijmeriei in 

 the lower part, and Unio, Paludina, etc., above. 



The Aptian, characterized by green (glauconitic) sands, overlaps 

 preceding deposits and rests on different Jurassic formations, as in the 

 Ardennes. 



The Albian comprises, at the base, green (glauconitic) sands with 



Aptian : 



Barremian 

 Neocomian : 



M. cor-testudinarium auct. 



