Cambrian Faunas. 



265 



of the various phases of the Paradoxides fauna, as ;it pro- 

 sent known, will bring more clearly before the reader the 

 apparent thinning out of the types of this genus in going 

 south from the higher latitudes. 



Adopting the symbols for the different phases of this 

 fauna used on a preceding page it may be presented as fol- 

 lows : — 



eS 



'6 



Ph 



Ph 



Ph 



Ph 



Sardinia (Italy) 



Montagne Noire (France).. 



Bohemia 



Wales 



Sweden and Norway 



Newfoundland 



Acadia (N. Brunswick).. 

 Massachusetts 



The genera of the upper horizon or zone in the Cambrian 

 rocks of Sardinia, the trilobites of which are described by 

 Prof. Meneghini, are of no less interest than those of the 

 lower, as they show a mingling of the genera of 

 the Paradoxides Zone with those of the summit of the 

 Cambrian system. Thus we find Anomocare which in 

 Sweden is a characteristic genus of the Upper Paradoxides 

 beds, in association in these beds with two Asaphus-like 

 forms which Meneghini compares to Platypeltis and Psilo- 

 cepalus, genera which in the North of Europe belong to the 

 upper part of the Upper Cambrian. 



If we give Anomocare the full range accorded to it by 

 Angelin, Dames and Meneghini, it will include, beside the 

 forms of the Upper Parodoxides, many species found in 

 different countries in the lower part of the Upper Cam- 

 brian. It is in this way that Dr. Dames has treated the 



