B. WALKOM. 



67 



since their position is uncertain. Tn column 3, the percentages 

 are given, including Tc^niojAeris with the ferns; in column 4, 

 this genus is included with the cycads. This latter result gives 

 the flora a not abnormal character in the proportion of ferns and 

 cycads, and indicates a general similarity to some lihsetic floras; 

 there are, however, certain points which may indicate a some- 

 what greater age, e.y., the high percentage of Equisetales, and 

 the rather smaller percentage of Cycads, than is usual in Rhsetic 

 and Jurassic floras. 



For convenience of reference and comparison, the following 

 Table is quoted from Wieland : — * 



Table ii. (after Wieland). 

 Elements of typical Rluetk-Oolitic Ft one. 



The flora of the Ipswich Series may now be examined in 

 greater detail. 



Equisetales. — Thki percentage of Equisetales in the Ipswich 

 flora is unusually high for a Mesozoic flora. As I have already 

 pointed out,t they show attinities with the Equisetales of Rhsetic 

 floras. Neocalarnites hoereiisis occurs in the Rhsetic of Sweden, 

 and Neocal<imites Carrerei in the Rha?tic of Tonkin, and in the 

 Stormberg flora (Molteno Beds) of South Africa. Phyllotheca 

 australis is one of the few species which continue from the 

 Palaeozoic into the Mesozoic in Australia, occurrincr in the Per- 

 mian (Permo-Carboniferous) of Eastern Australia, and also in 



* Amer. Journ. Sei., xxxvi. (1913), p.272. 

 t Queensland Geol. Surv., Publication No. 252, p. 38, 



