OTOZAMITES. 209 



of the fern, exhibit a greater likeness to Otozamites Beani than 

 is presented hy any recent Cycad. While believing this Jurassic 

 plant to be a member of the Cycadales, I would draw attention 

 to the fact that the fronds exhibit more marked fern - like 

 characters than are found in recent Cycadean leaves. The 

 Palaeozoic Cycadofilices have made us familiar with the union of 

 Filicinean and Cycadean features, and traces of the common 

 origin of the Ferns and Cycads are exhibited by the Mesozoic 

 genus Bennettites. In the frond of Otozamites Beani we have, 

 I believe, a further indication among Jurassic Cycadean plants 

 of the close relationship of Ferns and Cycads, which is more 

 faintly revealed in the recent species of these two groups. 

 Among recent Cycadean fronds which bear most resemblance to 

 Otozamites Beani may be mentioned Zamia furfuracea, Ait., and 

 allied forms. 



40,568. PI. II. Fig. 3. 



A large slab of shale with two fronds about 20 cm. long, and 

 parts of others. The longest pinna has a length of 3 4 5 cm. 

 and a breadth of T7 cm. The pinnae are attached to the upper 

 face of the rachis by the lower edge of the base, the lobed 

 upper edge being free and often overlapping the next higher 

 pinna ; the veins are well marked, spreading from the point of 

 attachment, and frequently forked. The pinna) shown in the 

 figure have somewhat more pointed apices than in some of 

 the specimens of this species. Cf. Zigno's figures ' (pis. xxxv. 

 and xxxvi.) of 0. Mblinianus, Zign. 



Lower Shale, Scarborough. Bean Coll. 



39,214. PI. I. Fig. 4. 



The basal part of a frond, bearing deltoid pinnae with 

 upward-directed tips ; the basal pinnae are broader in proportion 

 to their length than those shown in Fig. 3. These pinnae are 

 broader than the corresponding pinnae in Zigno's specimens of 

 Otozamites Molinianw. 



Scarborough. Bean Coll. 



1 Zigno (73). 



