• Earliest known rugosan-stromatoporoid symbiosis from the Llandovery of Estonia (Baltica)Vinn, Olev; Wilson, Mark A.; Toom, Ursula; Mõtus, Mari-AnnPalaeogeography, Palaeoclimatology, Palaeoecology2015 / p. 1-5 https://doi.org/10.1016/j.palaeo.2015.04.023 https://www.scopus.com/sourceid/13985 https://www.scopus.com/record/display.uri?eid=2-s2.0-84929012509&origin=inward&txGid=0196cda68f11c6a29af9d7d78a4a3d23 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=PALAEOGEOGR%20PALAEOCL&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000356984600001