Name of Stratigraphic unit and correlation with Stage Slices:

Amorphognathus ordovicicus
Ka4
Hi1
2

Name refers to the following Stratigraphic units:

Opinion Reference

Bergström et al.
2012
A new upper Middle Ordovician–Lower Silurian drillcore standard succession
from Borenshult in O¨ stergo¨tland, southern Sweden: 2. Significance of d13C
chemostratigraphy

 

Opinion is based on (if other than Stage Slice: