11 



Baiera bidens (Tenison- Woods). 

 (Plate 3, figs. 1, 2.) 



1883. Jeanpaulia bidens, Tenison- Woods, P.L.S.N.S.W., 8, p. 132, 



t. 4, fig. 3. 

 1898. Ginkgo bidens. Shirley, Proc. Roy. Soc. Qld., 12, p. 74, t. 6. 

 1898. Ginkgo bidens, Shirley, Qld. Geol. Surv., Bull. 7, p. 12, t. 19, 



fig. 1; t. 21. 



Leaf stalked, lamina fan-shaped, divided into a number of long 

 narrow segments which are somewhat acutely pointed. These 

 segments are up to 12 cm. long and 4 mm. wide ; they are traversed 

 by a few dichotomously-branching veins which are nearly 1 mm. 

 apart ; there are usually 3 to 8 veins in a single segment. 



The petiole is finely striated, narrow and slender, being up to 

 10 cm. long and only 2 mm. broad. 



Some specimens show a resemblance to G. sibirica from the 

 Jurassic of Oregon.^® 



Baiera australis, Seward, ^^ from the Jurassic of Victoria is 

 another species of similar form. 



This species is similar to some figures of B. gracilis, Bunbury, 

 as noted by Seward,^® and there is a possibility of the two being 

 identical. 



Isolated segments are very similar to the segments of B. gink- 

 goides, but the two species are quite distinct in the lower portion 

 of the leaf, and in the manner of division of the leaf. 



LocaHties : — {Ipsivich Series) : Denmark Hill (F 104a) ; Yer- 

 onga (F 100). 



Figured specimen: The original of Plate 3, fig. 1, is specimen 

 1411 in the collection of the University of Queensland. 



Baiera ipsviciensis, Shirley. 

 (Plate 4, figs. 1,2.) 



1898. Baiera ipsviciensis, Shirley, Qld. Geol. Surv., Bull. 7, p. 12, 

 t. 3, fig. 2. 

 Leaf with two branches from the top of the petiole. The 

 branches divide dichotomously, usually about three times ; the 



*® Ward /05), t. 32, fig. 3. " Seward (04a), p. 179. 



" Seward (04a), p. 177, figs. 36, 37. 



