Late Silurian-Early Devonian tessellated heterostracan Oniscolepis Pander, 1856 from the East Baltic and North TimanMärss, Tiiu; Karatajute-Talimaa, ValentinaEstonian journal of earth sciences2009 / 1, p. 43-62 : ill https://artiklid.elnet.ee/record=b1205601*est