269- 



39,208. PI. IX, Fig. 7. 



This example occurs on the same slab with the leaf of B. gracilis 

 represented in Pig. 5 ; it has .segments intermediate in breadth 

 between V. 3682 (Fig. 6) and the narrower forms of B. gracilis. 



39,283. Text-fig. 46. 



A tuft of partially expanded leaves similar to B. mierophjlla 

 (no doubt a young leaf of B. Lindleyana), as flg-ured by Phillips. 

 This specimen is practically identical with some of the fossils^ 

 figured by Heer as examples of CtekanowsMa. 



3. Baiera Phillipsi, I^athorst. 



[Ofvers. k. Veten. Akad. Forhand. p. 76, 1880.] 



(PI. IX. Fig. 4 ; Tcxt-fig. 47.) 



1829. Sphenopteris longifolia, Phillips, Geol. Yorks. p. 148, pi. vii. fig. 17. 

 1864. Baiera longifoUa, Leckenby, Quart. Journ. Geol. Soc. vol. xx. p. 76. 



Cyclopteris cUgitiita, var. major, Soheuk, Palseontograpli. pi. xlix. fig. 2- 

 1875. Cyclopteris longifoUa, Phillips, loc. cit. p. 200, pi. vii. fig. 17. 

 1880. Baiera FMUipsii, Nathorst, Berattelse, p. 76. 

 1885. ? Saliahiria lepida, Dawson, Trans. E. Soc. Canada, pi. ii. fig. 2. 



? Baiera longifoUa, ibid. pi. ii. fig. 5. 

 1892. Baiera longifoUa, Fox-Strangways, Tab. Foss. p. 137. 



Type-specimen. York Museum. (Tcxt-fig. 47.) 



The specimen on which Phillips founded the species Sphenopteris 

 longifoUa is shown in Text-fig. 47. If this drawing, which was 

 carefully made from the type-specimen, be compared with PhUlips' 

 figure, it will be seen to bear a somewhat closer resemblance to 

 a leaf of the Baiera type than is suggested by the original 

 illustration. The example shown in Fig. 4, PI. IX., is practically 

 identical with the type-specimen. There is but little difference 

 between the present type of leaf and some of the more deeply 

 dissected and narrower lobed forms of Ginkgo digitata (of the 

 shape usually referred to Ginkgo Huttoni) on the one hand, and 

 Baiera gracilis on the other. It is convenient, however, to retain 

 a definite specific name for this foirm of leaf, with its linear and 

 bluntly terminated segments, as it constitutes a fairly distinctive 

 type. The specific name longifoUa was applied by Pomel to a leaf 

 of somewhat similar but not identical form, which he named 



