Ozarkodina snajdri forms a subdivision of the
Pseudomonoclimacis latilobus graptolite zone in the
Burgsvik beds Silurian formation in Sweden. An
Ozarkodina snajdri crispa zone has also been identified in the
Wills Creek in Virginia.
Ozarkodina derenjalensis is found in the Silurian of the
Niur Formation in Iran. The
Kellwasser event in the Devonian which saw the extinction of all
Ozarkodina species is reported in the
list of Global Boundary Stratotype Sections and Points. == References ==