924 PRINCIPLES OF STRATIGRAPHY 



Class I. ChlorophycecB (Green algae). 

 Order III. Characeae. 

 Order II. Euchlorophyceas. 

 Order I. Conjugataceas. 

 Phylum I. Protophyta. 



Class 3. Myxomycetes (Slime-molds), sometimes regarded as Protozoa 



(Mycetozoa). 

 Class 2. Flagellata (more generally regarded as Protozoa). 

 Class I. Schizophyta. 



Order II. Cyanophyceas (Blue-green algae). 

 Order I. Schizomycetes (Bacteria). 



