Česko-estonská stratigrafie: Porovnání verzí

| colspan="3" | '''silur''' ''silur''
|-
| rowspan="1314" | ordovician '''ordoviitsium''' ''ordovik''
| rowspan="4" | upper ordovician
| style="border-bottom:double;" | hirnantian
|   ||   ||   ||   ||  
|-
| rowspan="45" | middle ordovician
| rowspan="34" style="border-bottom:double;" | darriwilian
|   ||   ||   ||   ||  
|-
| rowspan="89" | '''ölandi'''
|   ||   ||   ||   ||  
|-
|   ||   ||  
| rowspan="45" style="border-bottom:double;" | ''arenig''
|  
|-
|   ||   ||   ||  
|-
| style="border-bottom:double;" | dapingian
22 565

editací