426 OSBORN AND REEDS PREHISTORY OE MAN IN EUROPE 



Pliocene and early Quaternary, intermingled with a cold, north temperate 

 modern fauna (29 species). Higher up, at Menchecourt, is a strip con- 

 taining the warm Elephas antiquus fauna and rude Chellean tools. 



Deperet does not recognize his Tyrrhenian Stage (28-30 meters) at this 

 point (elsewhere correlated with the warm Elephas antiquus fauna), but 

 nearer to the mouth of the Somme, at Saint- Valery, he recognizes with de 

 Lamothe sandy plateaus of the 30-meter level, of marine origin, which 

 he considers incontestable evidence of the Tyrrhenian Stage, for the first 

 time recognized on the French Atlantic coast, j^orth of the Somme the 

 marine deposits of 11 -meter altitude (ancient shoreline of 20 meters) 

 indicate, according to de Lamothe and Deperet, the 18-20-meter Mon- 

 astirian shoreline. Still farther north, on the French coast of the English 

 Channel, are recognized again the 30-35-meter shoreline of the Tyr- 

 rhenian Stage, the 55-60-meter shoreline of the Milazzian Stage, and even 

 the 100-meter shoreline of the Sicilian Stage. Thence de Lamothe and 

 Deperet trace above Havre a precise correlation with the 100-meter 

 shoreline of the Sicilian Stage. 



Crossing the Channel to the southern English coasts, Deperet (1918.5) 

 traces many shorelines of 0-20 meters, from the Isle of Wight to 

 Plymouth and along the coast of Devon to the south near Brighton and 

 Bristol, recognizing throughout the higher of these marine levels (18-20 

 meters) as the Monastirian shoreline, with deposits in which the absence 

 of Mediterranean and Lusitanian forms denotes waters a little colder than 

 those of the English Channel at present, although not containing truly 

 arctic forms. 



Most interesting to the paleontologist are the Sussex and Hampshire 

 coasts (studied by Godwin Austen, Prestwich, Bell, and Eeid), where a 

 typical coastal plain yields mammals of the Elephas primigenius cold 

 fauna and marine Quaternary deposits near Portsmouth, with a constant 

 altitude of 30-33 meters. He concludes : 



"If one adds the presence of Elephas antiquus in the deposit of Selsey it is 

 seen that all these facts are in accord to indicate, on the south coast of Eng- 

 land at the epoch of the 30-33-meter shoreline, a sea with a temperature 

 warmer than the present sea, thus agreeing well with the introduction in the 

 Mediterranean of the Strombus bubonius warm fauna of the Tyrrhenian Stage." 



Elsewhere — for example, on the north coast of the Isle of Wight — he 

 recognizes the 52-60-meter Milazzian Stage and the 100-meter Sicilian 

 Stage. 



Land Connections across the Brit isle Channel 



Coordination. — At this important point it would seem desirable to 

 abstract Deperet more fully (1918.5). It appears interesting to me to 



