Palaeontographica XXIV, N. F. IV. 



Taf. XXXI. 







<'-l " ■■■'■■■''■'.': ßf-pp 





i " 





,m 





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1. Asplenium argutulum Heer. — 2. 3. Adiantites Amurensis Heer. — 4. 5. Thyrsopteris 



elongata m. — 6. Gingko Sibirica Heer. 



