XI. 



STONESFIELD FOSSILS. 



169 



Naiadea obtusa. Buck. Sevenhampton. 



ovata. Buck. Eyeford, Sevenhampton. 

 Stricklandia acuminata. Buck. Sevenhampton. 

 Cycadacece. 

 Bucklandia squamosa. Stern. Stonesfield. 



Diagram XXVIII. Stonesfield ferns (Filices). 



T. Pecopteris di versa, n. s. Phil. Branching fern, remarkable for different forms 

 of leaf: on the lower part lanceolate and petiolate, in the upper part sessile, and 

 apparently springing in pairs of narrow leafits. This is believed to arise from the 

 removal of the midrib. 2. Pecopteris approximata, n. s., shewing the ter- 



mination ; the leafits sessile, closely placed, and slightly crenated. 3. Sphsenopteris 

 plumosa, n. s. Phil, ; the leafits lobed, separate. 4. Shewing somewhat of the 



nervures. 5. Pecopteris incisa, n. s. Phil. ; more sharply crenated than fig. 2, and 



the leafits more separate. 6. Enlargement to shew the form of the leafit. 7. Sphen- 

 opteris cysteoides. Lindley. The specimens drawn for Foss. Flor. t. 176. It is 

 perhaps not a fern, but one of the curious coniferous plants noticed in reference to 

 Diagram XXXI. 8, 9, 10. Taeniopteris angustata, n. s., Phil., shewing the sporangia 

 and the nervures. 10. Enlargement. n and 12. Undetermined plant, appa- 

 rently cycadeous. No distinct nervures. 1 2. The termination of a leaf. 



Palseozamia longifolia. Phil. Stonesfield. 



megaphylla. n. s. Phil. Stonesfield. 

 ,, pecten. Phil. Stonesfield. 

 pectinata. L. and H. Stonesfield. 

 taxina. L. and H. Stonesfield. 



