A multiproxy study of the Katian and Hirnantian in the Puhmu core in NE Estonia resulted in new data on chitinozoan
and brachiopod biostratigraphy.
biozonation of the Brabant Massif, Belgium.
Precise time-correlation in the Ordovician can be achieved by biostratigraphical methods, particularly using graptolite, conodont and chitinozoan
In the chitinozoan
biozonation, the Eisenackitina rhenana Subzone of the Laufeldochitina stentor Zone corresponds to the lower part of the Kukruse Stage (Nolvak & Grahn 1993; Nolvak 1997).
Upper Llandovery to Middle Wenlock (Silurian) lithostratigraphy and chitinozoan
biostratigraphy in southwestern Estonia and northernmost Latvia.
Those of seven chitinozoan
biozones are presented according to Nestor (2009, 2011, 2012), seven conodont ones from Viira & Aldridge (1998) and Viira (1999, 2000) and seven vertebrate indices according to Marss (1986, 1997) and Marss & Mannik (2013).
fauna recovered from the GSSP section and a supplementary limestone section in Oklahoma supports correlation with the Baltic Spinachitina cervicornis Zone (Goldman et al.
All the chitinozoan
taxa encountered in the sections from this stratigraphical interval are not illustrated here (Fig.
Integrated studies of basin successions have enabled also tying the conodont and chitinozoan
zones with the standard graptolite zonation (Loydell et al.
Later, Dufka (1992) discovered the abundant occurrence of the biostratigraphically significant chitinozoan
biozonation and data on bentonite beds are employed in the correlation of the sections and the analysis of facies shifts caused by sea-level rises and falls.