A sparsely encrusted hardground with abundant Trypanites borings from the Llandovery of the Velise River, western Estonia (Baltica)Vinn, Olev; Toom, UrsulaEstonian journal of earth sciences2016 / p. 19-26 : ill Bioerosion of inorganic hard substrates in the Silurian of Estonia (Baltica)Vinn, Olev; Toom, UrsulaGFF2016 / p. 306-310 : ill https://doi.org/10.1080/11035897.2015.1076513