geology, paleontology, microfossils, scolecodonts, chitinozoans, conodonts, Paleozoic, Ordovician, Silurian, stratigraphy, biostratigraphy, Baltica, Baltoscandia, Estonia
https://orcid.org/0000-0003-4670-4452
Tallinn University of Technology, Tallinn, Harjumaa, EE
Estonia