The trace fossil Arachnostega in the ordovician of Estonia (Baltica)Vinn, Olev; Wilson, Mark A.; Zatoń, Michał; Toom, UrsulaPalaeontologia electronica2014 / art. 40A, 9 p. : ill https://doi.org/10.26879/477 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS