Rare arthropod traces from the Ordovician and Silurian of Estonia (Baltica)Vinn, Olev; Toom, UrsulaNeues Jahrbuch für Geologie und Paläontologie2016 / p. 135-141 : ill https://doi.org/10.1127/njgpa/2016/0570 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS