552 



CYCADOPHYTAN FRONDS 



[CH. 



forked veins. Arber compares the fragments with Pterophyllum 

 blechnoides Sand, from Germany 1 . 



Pterophyllum Cambryi Renault. 



This Permian species from Autun 2 is similar to P. Fayoli, 

 but differs in the more slender rachis and in the finer venation 

 of the linear, acute, pinnae. The pinnae in Renault's specimen 

 reach a length of 4-8 cm. and are from 3-5 4 mm. broad ; they 

 are slightly confluent at the base and the veins occasionally fork. 



FIG. 612. Pterophyllum Fayoli. (From the type -specimen, Paris; ^ nat. size.) 



Among other Palaeozoic species are Pterophyllum Grand' Eury- 

 anum Sap. and Mar. 3 discovered by Grand' Eury in the Coal 

 Measures of France, P. blechnoides Sand. 4 from the Upper Coal 

 Measures of Oppenau and recorded by Geinitz 5 from the Middle 

 Permian of Germany, P. Cottaeanum Gutb. 6 , a similar type, also 

 from Permian rocks, but with coarser venation. The specimens 

 figured by Geinitz as P. blechnoides and P. Cottaeanum are in 

 the Dresden Museum : the former species is represented by a 



1 Sandberger (64) PL n. figs. 14. 



2 Renault (96) A. p. 322, fig. 64. 



3 Saporta and Marion (85) p. 109, fig. 58 A. 



4 Sandberger (64) PL n. figs. 14. 6 Geinitz (73) PL m. fig. 9. 

 6 Geinitz fig. 8. 



