INTEODTJCTION. 



to the Jura and "Wealden than to the Chalk period. The following 

 additions are made to the species already included among the 

 plants from Ettingshausen's Wealden localities ^ : — 



P. Soheneggeri, Sch. 



P. obovatus, Sch. 



Zamites O'opperti, Sch., and four other 



species. 

 Widdririgtonites gracilis, Heer f 



Chondrites fiircillatus, Eoem. 

 Baiera cretosa, Sch. 

 Cyeadopteris Dunkeri, Sch. 

 Oycadites Seerii, Sch. 

 Fodozamites Zifielii, Sch. 



In Velenovsky's contributions to Mesozoic botany we have 



certain species recorded from Lower Cretaceous rocks in Bohemia 



which point to a close agreement in facies with the North German 



and English Wealden. These beds are classed by Velenovsky as 



Cenomanian.2 Among the " Ferns " from Peruc and other 



localities the following species occur, which are identical with or 



closely allied to typical "Wealden forms : — 



F. Albertini (Dunk.) = P Cladophlebis 



Albertsii (Dunk.). 

 Jeanpaulia carinata, Vel. 



Tliyrsopteris capsulifera, Vel. 

 Laccopieris Dunkeri, Schenk = Jlficjo- 



dieiyon Dunkeri (Schenk). 

 Ftsris frigida, Heer. 



Ficksonia punctata (Sternb.). 

 Tempskya va>iaiis (Corda). 



Among the Gymnosperms from the same beds there are certain 

 forms which closely resemble Wealden species '■' — e.ff. : — 



Thinnfeldia variabilis, Vel. ='i SagenO' 



pteris Mantelli (Dimk.). 

 Wilssonia Fokemica, Vel. 

 Sequoia Feichenbachi, Heer. 



Cunning hamites elegans, Heer. 

 Finns Quenstedti, Heer. 

 Folirion primigenimn, Sch. 



POETTJGAL. 



In his "Contributions a la flore fossil du Portugal" Heer has 

 given descriptions and illustrations of the following species from 

 two localities — Almargem and Valle de Lobos ; these floras are 

 considered by him to be in " intimate relation with the "Wealden 

 flora."* 



• Palseontographica, vol. xix. 1871, p. 23. 



« Ahh. k. bohm. Ges. Wiss. vii. Folg. Band ii. 1888. 

 ' Gymn. bohm. Kreid. 



* Secc. Trab. Geol. Portugal, 1881, p. vi. 



