Česko-estonská stratigrafie: Porovnání verzí

| colspan="3" | '''silur''' ''silur''
|-
| rowspan="1618" | ordovician '''ordoviitsium''' ''ordovik''
| rowspan="46" | upper ordovician
| style="border-bottom:double;" | hirnantian
| rowspan="24" | '''harju'''
| style="border-bottom:double;" | '''porkuni''' ||   ||  
| style="border-bottom:double;" | kosovian ''kosov'' ||  
|-
| rowspan="24" style="border-bottom:double;" | katian
|   ||   ||   ||   ||  
|-
|   ||   ||   ||   ||  
|-
|   ||   ||   ||   ||  
|-
22 565

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