98 CYCADOLEPIS. 



V. 2129*. A scale or possibly petiole base with numerous 

 hair-like appendages ; similar to V. 2802. Cf. also Cycadolepis 

 hiria, Sap., and the Otozamites petiole of PI. II. Fig. 4 of the 

 present volume. V. 2927. Part of another woolly or hairy scale. 

 Ecclesbourne. Rufford Coll. 



2. Eury- Cycadolepis. 



In this section are included several detached scales varying in 

 shape from an almost orbicular or somewhat pentagonal form, such 

 as V. 2699, represented in PI. VI. Fig. 6, to the larger and longer 

 type as shown in PL V. Fig. 2. So far as I have been able to 

 discover, these forms have not been previously figured ; there 

 cannot be much doubt as to their original connection with some 

 form of cycadean stem, and indeed some of the specimens are 

 identical with the stout curved scales on such stems as those of 

 Fittonia. In some cases the scales occur in very close associa- 

 tion with stems, but in none are they found actually in place. 

 For the present, at any rate, it is better to describe some of 

 the more characteristic forms, and to include them all under 

 Cycadolepis, suggesting at the same time the very probable 

 and indeed almost certain identity of some with the scales of 

 Fittonia and other forms of stems. Hosius and von Marck have 

 described a specimen from the Gault of Ahaus (Westphalia), which 

 they regard as probably made up of a few large petiole bases 

 belonging to some form of cycadean stem. One of these 

 "petiole bases" has a length of llcm., a breadth of 4'7 cm., 

 and is 4 cm. in thickness. The generic name Megalozamia is 

 proposed for this doubtful fossil, and the following definition 

 is given by these authors : " Rhachidum basibus incrassatis 

 carnosis falciformibus, costis quatuor longitudinalibus prseditis ; 

 costis roarginalibus acutioribus, costa et dorsali et ventrali 

 obtusiori." l Structures such as this diagnosis describes would 

 be legitimately included in the genus Cycadolepis, used in the 

 more comprehensive sense as suggested above. 



1 (A. 1), Palseontographica, vol. xxvi. p. 203, pi. xliii. figs. 181-183. 



