16 



under surface. The determination as Pterophyllum is to some 

 extent coniirnied by the obtuse, broadly rounded terminations 

 of the pinna?, and the frequent dichotomous branching of the 

 veins, both features being contrary to the usual habit in Nilssonia. 



Pterophyllum abnorme, Etheridgc Jr. 

 (Plate 5, figs. 1,2, 3.) 

 1SU2. Pterophyllum abnorme, Etheridge Jr., Geol. Pal. Qld., p. 381, 

 t. 17, fig. 5 and C. 



Frond linear, broad, long (the longest specimen available is 

 incomplete and is 11 cm. in length). The rachis is well develoi)ed 

 (up to 3 mm. broad), straight, and striated longitudinally. The 

 pinna? are at right angles to the rachis, alternate, subopposite or 

 opposite, broad, parallel -sided, up to at least 3 cm. long and 5 to 

 8 mm. broad ; they are attached laterally by the whole base, a slight 

 expansion at the base joining adjacent pinna? ; the apex is bluntly 

 rounded. The veins are fine, numerous, dichotomously branched at 

 irregular intervals and about 20 in number in a single pinna. 



The specimens referred to this species agree with Etheridge's 

 type specimen of P. abnorme. An examination of the type specimen 

 shows that the veins bifurcate at irregular distances from the rachis 

 and not constantly at about half way as stated by Etheridge. 



The present species is somewhat similar to P. miiUilineatum, 

 Shirley, but is usually smaller, the frond is linear and narrower, 

 and there are fewer veins. 



Localities :— [Walloon Series) : Redbank, near Mt. Esk (F 153) ; 

 Road between portions 155 and 157, Parish Biarra (1412). 



Figured specimens : The originals of Plate 5, figs. 1 and 2, are 

 specimens F 153 in the collection of the Queensland Geological 

 Survey and 1412 in the University of Queensland Collection. 



Pterophyllum contiguum, Schenk. 

 (Plate 6, figs. 3, 4.) 

 1903. Pterophyllum contiguum, Zeiller, Flore Fossile des Gites de 

 Charbon du Tonkin, p. 191, t. 48, fig. 1-8. 



1905. Pterophyllum contiguum, Fontaine, U.S.G.S., Monograph 48, 

 p. 99, t. 19, fig. 7-11. 



Frond linear, pinnix? becoming someA\hat shorter towards base 

 and apex, attaining a length of at least 11 cm., and probably con- 

 siderably more. The rachis is strong, 1-5-2 mm. ^vide and striated 

 longitudinally. The pinnse are approximately at right angles to 



