21 



OtOZAMITES QUEENSLAND!, N. SP. 



(Plate 7, figs. 3, 4, 5.) 



This species is abundant in the Esk district. The rachis is 

 strong and about 2 mm. broad ; the frond is rather Unear, wide, 

 open ; the pinnae make a varying angle with the rachis (usually 60° 

 or more), and are alternate or subopposite, close together or some- 

 what distant ; they narrow slightly towards the base and the apex 

 is bluntly rounded. The attachment of the pimiae to the rachis is 

 on the upper surface and they seem to be slightly auriculate at 

 the base, though this is difficult of determination. The pinnse 

 are from 1-1 to 2-8 cm. long, and 3 to 6 mm. wide. The veins are 

 distinct, diverging, and branch dichotomously, there being usually 

 about 7 or 8 veins at the base, and up to 22 at the widest part. 



Of the specimens available, by far the greater number show the 

 view from the lower side and, of course, in these cases the attachment 

 of the pinnae appears to be lateral as in Pterophyllum. A few speci- 

 mens, however, show the upper surface, and it is seen that the pinnae 

 are really attached to the upper surface of the rachis. This method 

 of attachment and the divergent character of the venation, together 

 with the slight indication of an auriculate base seem to place the 

 specimens undoubtedly' in the genus Otozamites, and it appears to 

 differ from any described species. 



It is somewhat similar in general form with some specimens of 

 0. hesjjera, Wieland, from the Liassic flora of the Mixteca Alta of 

 Mexico. *3 



Locality : — {Walloon Series) : Road between portions 155 and 

 157, Parish Biarra (1416). 



Figured specimens : The originals of Plate 7, figs. 3 and 5, are 

 specimens 1410 and 1416 in the University of Queensland 

 Collection. 



Otozamites obtusus, L. and H, 



(Plate 8, fig. 1.) 



For fuller synonymy, see Seward (04), p. 39. 



1834. Otopteris obtusa, Lindley and Hutton, Fossil Flora, t. 128, 



1904. Otozamites obtusus, Seward, Jurassic Flora, vol. 2, p. 39, 



t. 1, figs. 1, 3, 5. 



Frond pinnate, broad, linear (?), attaining a breadth of 5 cm. 

 The pinnae are slightly auriculate at the base and are inserted 

 at a wide angle ; they are up to nearly 3 cm. long and 4 to 5 mm. 



" Wieland (14), t. 9, 10. 



