548 Prof. J. Park — Tertiaries and Cretaceous, New Zealand. 



regarding the two calcareous bands at Kakanui as local extensions of 

 the latter : — 



Ototara Stone, common also to the Mount Brown Beds. 



Kekenodon onemata. Pseuclamusium huttoni. 



Aturia australis. Lima paleata. 



Dentcdium mantelli. Plagiostoma Icevigata. 



Scaphella corrugata. Cucullcea alta. 



Siphonalia nodosa. Yenericardia awamoaensis. 



Cirsotrema browni. Magellania novara. 



Ostrea angasi. M. iiarki. 



Anomia alectus. Terebratula oamarutica. 



Pecten hutchinsoiii. Meoma craiofordi. 



P. williamsoni. 

 About 46 per cent of the faunas are common. Moreover, Cirsotrema 

 broivni, Pseudamusium huttoni, and Meoma craiofordi are characteristic 

 of the Ototara Stone horizon from one end of New Zealand to 

 the other. 



The Mount Brown Beds at Waipara contain besides these many 

 forms that are only found below the Ototara Stone in the Oamaru 

 district. In fact, the Mount Brown fauna is perhaps nearer that 

 of the Wharekuri sands lying below the Ototara Stone than any other 

 hoiizon in New Zealand, no less than 50 per cent of its fossils being 

 common to both. It would thus happen that in correlating the 

 Mount Brown Beds with the Ototara Stone instead of a lower horizon, 

 as the palaeontological evidence would seem to warrant, I have pursued 

 a conservative course. 



Discussing the age of the Oamaru Stone, the authors state that they 

 believe it to be Oligocene, a European refinement of age which our 

 present knowledge of the Tertiary faunas does not justify. But let us 

 suppose for the moment that it is Oligocene as suggested. The 

 Oamaru Stone is, they tell us, the equivalent of the Amuri Limestone, 

 which is by all admitted to lie conformably on the greensands and 

 sandy beds containing Mesozoic Saurians, Belemnites, etc. Here, then, 

 we get the curious phenomenon of an Oligocene limestone lying 

 conformably on an Upper Cretaceous formation. 



In my report on the Wanganui-King County in 1886-7 I stated 

 that there appeared to be a complete succession from the new Pliocene 

 down to the basal conglomerates of the Lower Tertiary Coal Series. 

 No stratigraphical break was recognized in the Tertiary succession. 

 The unconformity which I thought I recognized at Waipara between 

 the Mount Brown and Motanau Beds may not exist, or if it does 

 it may be purely local. In my classification of the Jamger formations 

 adopted in my Geology of New Zealand I have recognized only 

 one physical break, namely one between the Oamaru and Waipara 

 Series. Nothing that I have seen since the publication of that work 

 has led me to alter the opinion I then expressed. Moreover, the 

 evidence is overwhelming that we have two great coal-bearing 

 formations in New Zealand, namely — 



1. Oamaru Series . . Lower Tertiary. 



2. Waipara Series . . Upper Cretaceous. 



The authors state that the new Geological Survey under Dr. Bell 

 did not find it practicable to divide the younger rock series into two or 



