Maryland Geological Survey 



295 



These comprise 4 Fungi, 39 Filices, 2 Marsiliacese, 1 Selaginella, 1 

 Equisetacea, 11 Cycadophytes, 3 Araucariea?, 33 Coniferae, 2 Monocotyle- 

 donas, and 88 Dicotyledons. One hundred and twenty-seven of these 

 are peculiar to the Perucer beds and 37 are confined to the Perucer and 

 to other Cenomanian horizons. Of supposedly older forms three are 

 identified with Wealden (Sequoia, Pteris and Microdictyon) species, two 

 Podozamites are identified with species recorded first in the middle 

 Jurassic. Five species are identified with forms described by Heer from 

 the Kome beds (Barremian) of Greenland. These comprise a Sequoia, a 

 Pteris and three Gleichiniae. One species (Eucalyptus) has been recorded 

 by Saporta from the Albian of Portugal. Nine of the Perucer forms range 

 upward greater or less distances in the Bohemian Turonian and seven 

 additional range to the top of the Bohemian section (Emscherian). Three 

 additional are found in the Emscherian of other areas. Most of these 

 floral types are represented in American Upper Cretaceous floras, in a 

 few cases even by identical species. Conformably overlying the Perucer 

 beds, but transgressing them and in places resting on Crystallines or 

 Paleozoics are the Korytzaner beds, marine glauconite and fossiliferous 

 sands without plant fossils except for the somewhat doubtful species 

 Cyparissidium pulchellurn Velenovsky. 



Turonian. — The Turonian stage is extensively represented in Bohemia 

 by a varied series of deposits with extensive marine faunas and a limited 



Priesexer 



(Greater Part) 



Tei'i.itzei; 



/ 



ISER 



(Sand Facies) 



Malnitzer 





Weissenberger 



number of fossil plants. The main stages are shown in the accompanying 

 diagram. The Weissenberger beds were described by Eeuss (1845) as the 

 " Planer Sandstein von Hradek und Triblitz," and were subsequently long 

 known as the " Planer des Weissen Berges bei Prag," since they are char- 



