Name of Stratigraphic unit and correlation with Stage Slices:

Expansograptus balhaschensis/ Expansograptus kirgisicus
Dw2
Dw3
2

Name refers to the following Stratigraphic units:

Opinion Reference

Sennikov, N. V. et al.
2014
The New Ordovician Stage Standard As Applied To The Stratigraphic Units Of The Western Altai-Sayan Folded Area

 

Opinion is based on (if other than Stage Slice: