Cretaceous Fossils found in Aberdeenshire. 



31 



It only remains to indicate the conclusion to which the study of 

 the Moreseat fossils has led me. 



Of the species enumerated by Mr. Salter in 1857 four have been 

 omitted from the preceding list, being regarded as doubtful identifi- 

 cations which have not been confirmed by subsequent discoveries. 

 Of the three genera of Echinoderms mentioned by him the 

 Discoidea was probably the species which resembles D. decor ata, 

 and the two named respectively Diadema and Ananchytes may have 

 been Lower Greensand forms for anything that we know to the 

 contrary. 



The number of named species available for comparison. with other 

 faunas is now 33. Out of this total no fewer than 25 are species 

 of Lower Cretaceous age, and only 7 of these range into the Gault ; 

 5 are species which have not been found elsewhere, 2 are Upper 

 Greensand species, but one of these is a doubtful determination, 

 and 2 are Ammonites, of which the identification is also doubtful. 

 There is therefore an overwhelming proportion of exclusively Lower 

 Cretaceous species, namely 18 to 2, while out of the 6 Cephalopods 

 5 are exclusively Lower Cretaceous forms, the only one which is not 

 being the very doubtful Am. Selliguinus. 



The occurrence of one Upper Greensand Echinoderm (Echino- 

 cyphus difficilis), and the possible occurrence of another ranging 



