FOSSIL PLANTS FROM XAGATO. 247 



to the liha^tic or to the JurassiV. From these facts, I aiii inch'ned to 

 believe, at present, that this little flora is somewhat older than that of 

 the Middle Jurassic of Central Ja]ia]i, r'orres])oiidiiiu- either to the 

 Liassic or, as it seems more probable, to the ii])])ermost Trias or Rha^ic 

 of Europe. Ordy the discovery of a o-i-eatei- înmdK'r of species ran 

 decide the question. Ft is here interesting- to note that a similar fl(^ra 

 is already known to exist in Ton_o'kin,£i', (Zeiller I. c.) and perhaps also 

 in China, ^'Xathorst having- recently nieAit'ioncd Dictijophyllum Nihsonl 

 Brfft. up. and Podo.zamitr.^ lancrolafus (Jisfmis Prest. as occnrrino- in 

 the " U])pf'i" Yan^-tszi." Anotlier point to be noted in onr flora is 

 the C(^m])arative impiciicy of sjiecies of Diet ijopluiJl urn ^ a n-enns whicli 

 had its maximal develojnnent in Europe durinii' tlie bMia^tic time. 



1) Xathorst, Om fôreVnnuiten af Dictyophylhim NiUsoni llrtjt. xp. i /v'/ha.^ Kol/nramle Bild- 

 niufjar. Oefversigt. af Kono-l. V^teuskaps-Akademiens Fnrhaiiillinoar, ISOO. Xo. S. 



