344 



Transactions. 



All those fossil plants are spoken of by the author of the article as having 

 a distinct Tertiary facies, and to be related closely to plants of undoubted 

 Tertiary age from other parts of the world, notably Australia. The 

 characteristic Tertiary character of this flora is very important when the 

 nature of the fauna of the beds immediately overlying is considered. The 

 presumption is that the beds containing it would be undoubtedly ad- 

 mitted as Tertiary were there not beds in another part of the area in a 

 slightly higher position containing animal remains which point distinctly to 

 a Cretaceous age for the containing beds. These occur at the base of the 

 series in Broken River itself, near the eastern margin of the basin, in beds 

 overlying the coal-measures. From this horizon McKay collected Concho- 

 thyra parasitica Hutt., as well as species of Perna, Cerithixm, and other 

 fossils ; and the present author has also collected Inoceramas fragments and 

 casts, as well as Perna, and Conchothyra included among a mass of frag- 

 ments of black oyster. In beds of approximately the same horizon above 

 the upper limestone gorge of Broken River fragments of saurian bones 

 were also found. 



But the lowest horizon from which a representative suite of fossils has 

 been obtained is that of the tuff bed in Coleridge Creek, which is inter- 

 stratified with the sands and marls above the greensands. From this bed 

 Thomson and the author obtained a number of forms, a list of which has 

 already been published by Thomson.* I have included lhis list, with 

 additional finds of my own, which will serve to strengthen the position 

 taken by Thomson in his paper as to the age of the beds. The following 

 is the complete list : — 



*Admete trailli (Hutt.). 



Ampullina miocenica Sut. 



Ampullina suturalis (Hutt.). 



Ancilla papillata (Tate). 



Ancilla subgradata (Tate). 

 *Callistoma aucklandicum Smith. 

 *Cantharidus sp. very similar C. jo ><- 

 ninus perobtusus Pils. 



Chione chiloensis truncata Sut. 



Clio (Styliola) sp. like Clio tatei Sut. 

 but larger. 



Cominella intermedia Sut. 



Coptochetus sp. 



Crassatellites obesus (A. Ad.). 



Epitonium marginatum (Hutt.). 



Epitonium rugidosum lyratum (Zitt.). 



Epitonium zelebori Dkr. var. 

 *Fulgoraria arabica elongata (Swains). 

 *Fulgoraria gracilis (Swains). 



Fusinus bicarinatus Sut. 



Hemifusus gonoides Sut. 



Lapparia corrugata (Hutt.). 



Leucosyrinx alta (Harris) = Turris 

 altus (Harris). 



Limopsis catenata Sut. 



Marginella harrisi Cossm. 



Paphia carta (Hutt.). 



Pecten sp. ? 



Polinices gibbosus (Hutt.). 



Polinices huttoni Iher. 



Polinices ovatus (Hutt.). 



Sella huttoni Sut. 



Siphonalia costata (Hutt.). 

 *Siphonalia nodosa (Mart.). 



Siphonalia turrita Sut. 



Siphonalia sp. ? 

 *Siphonium planatum Sut. 



Surculd seminuda Sut. 



Terebra costata Hutt. 



Turritella concava Hutt. 



Of these thirty-seven species, seven (including a doubtful species of 

 Cantharidus) — -viz., those marked with an asterisk — are Recent, the per- 



* J. A. Thomson, The Flint-beds associated with the Amuri Limestone of Marl- 

 borough, Tra»s. N.Z. lust., vol. 48, 1916, p. 51. 



