325 



Gontphonema rotundatum 

 Himantidium Arcus 

 Navicula fulva 



lineolata 



* Scalprum 

 Semen 



* undosa 

 JHnnularia viridis 



.^ ? 



* Stauroptera ? 



* ? CAchnanthes ?J 



* Stauronei's linearis 

 Surirella Craticula 



* ? 

 Synedra Entomon 



Ulna 



+ 



ZS 



23 33 



Phytolithakia: 



Amphidiscus armatus 

 clavatus 

 Rotella 

 truncatus 



