329 



Pinnularia Semen 

 Silicula 

 viridis 

 Surirella Cocconei's 

 Librile 

 pjgtnaea 

 ? 



Sffiedra Ulna 

 Tabcllaria — ? 

 Trachelomonas laevis 



PllYTOLITHARlEN : 37. 

 Lithodontium angulatum 



biemarginalum 

 Bursa 



emarginatum 

 furcalum 

 nasutum 

 Platyodon 

 rostratum 

 Lilhomesiles Pec/en 

 Lilhos phaeridium irreguläre 

 Lilhos tylidium Amphiodon 

 angulatum 

 biconcavum 

 bidens 

 clavatum 

 cornutum 

 crenulalum 

 curvatum 

 denticulalum 

 irreguläre 

 lacerum 

 laeve 

 obliquum 



