• Possible metazoan egg fossils from the Darriwilian (Middle Ordovician) of BaltoscandiaHints, Olle; Nõlvak, Jaak; Liang, YanEstonian journal of earth sciences2021 / p. 240-252 : ill https://doi.org/10.3176/earth.2021.16 https://www.scopus.com/sourceid/6000195392 https://www.scopus.com/record/display.uri?eid=2-s2.0-85121114552&origin=inward&txGid=b312c6e68c745aae407face5c91fe57d