74 



OTOZAMITES. 



the upper edge in some cases almost straight. Narrow elliptical 

 scars left on the surface of the rachis where the pinnae have 

 fallen off. Veins numerous, radiating outwards from the centre 

 of the base, but parallel in the greater part of the length of 

 each pinnae. 



V. 2360. PL I. Fig. 2. Eachis 35-5 cm. long; exceedingly 

 well preserved at the base, which shows by its clearly cut outline 

 the deciduous habit of the frond. Surface wrinklings or irregular 

 striations very distinctly marked on the rachis. The figure 

 represents only a portion of the specimen ; the upper part, not 

 shown in the drawing, is practically identical with the portion of 

 V. 2123 figured in PI. I. Fig. 1. The specimen as a whole shows 

 very clearly the great contrast between the loosely arranged, very 

 narrow, and short basal pinnas ; the somewhat more approximate 

 and much longer, gradually tapering, and slightly falcate pinnae 

 in the middle of the frond ; and the stiffer, more approximate, 

 and broader pinnae towards the apex. The lowest pinna is about 

 1 mm. broad, the broadest about 5mm. Some of the pinnae have 

 a distinctly auriculate base. Cf. Dunker, pi. ii. fig. 5. Eccles- 

 bourne. Rufford Coll. 



FIG. 4. Otozamites Goppertianus (Dunk.), (V. 2741). Enlarged. 



V. 2741. Fig. 4. Rachis 18cm. in length. Part of the lower 

 portion of a frond corresponding to V. 2360 (PI. I. Fig. 2). The 

 gradual increase in the breadth of the pinnae in passing from the 

 lower to the upper part of the frond is well marked. Auriciilate 

 bases very distinct, and venation fairly clear. Ecclesbourne. 



Rufford Coll 



