38 INTRODUCTION-. 



Salisburia sibirica, Heer ) cf. Ginkgo digitata (Brongn.) and Baiera Phillipsi, 



S. Itpida, Heer / Nath. 



Podozamites lanceolatus = ?P. lanceolatus (L. & H.). 



PERSIA. 



Several species of plants have been described by Goppert, Eichwald, 

 Schenk, and Krasser from various localities in Persia ; the flora is 

 considered by Schenk to point to a Rhsetic age ; J but the general 

 facies of the vegetation bears a distinct resemblance to the Lower 

 Oolite 2 flora of East Yorkshire. It is not an easy matter to decide 

 between a Rhaetic and Inferior Oolite age when we have but a few 

 fossil plant species as evidence ; the close agreement between many 

 of the elements of these two floras renders their separation a matter 

 of difficulty when the material is not very abundant. Whether or 

 not the Persian plant-beds belong to a Rhsetic horizon, there are at 

 least certain species in close agreement with Lower Oolite types. 



Asplenium Roesserti ; cf. Cladophlcbis denticulata (Brongn.). There is an 

 especially close resemblance between some of the large pinnules figured by 

 Schenk and those of similar form from East Yorkshire. 



Ctenozamites cycadea, Nath. ; cf . Ptilozamites Lechenbyi. 



Dictyophyllum acutilobum, Schenk ; cf. Dictyophyllum rugosum, L. & H. 



Okandridium tenuinerve ; cf . Tceniopteris vittata, Brongn. 



Pterophyllum Braunianum, Gopp. ; cf. Williamsonia pecten (Phill.). 



Podozamites lanceolatus = ? P. lanceolatus (L. & H.). 



Nilssonia polymorpha ) ? -,,-., . . /-nu-n \ 



^ y * > cf . Nilssoma compta (Phill.). 

 N. compta 



Ginkgo Muensteriana ; cf. Baiera gracilis, Bunb., and B. Phillipsi, Nath. 

 Acrostichites PTilliamsonis 3 = Todites Williamsoni (Brongn.). 

 Zamites approximate, Eich. 3 ; cf. Otommites. 



SOUTH AMERICA. 



Among the Rheetic plants described from South America by 

 Szajnocha 4 (Argentine Republic) and by Zeiller 5 and Solms- 

 Laubach 6 (Chili), there are some species comparable with British 



1 Schenk (87), Krasser (91). 



2 Eichwald (68), p. 18. 



3 Eichwald (68), pi. ii. figs. 3, 8. 



* Szajnocha (88). 



Zeiller (75). 



Solms-Laubach (99). 



