Downie, 1963
From dinoflaj2
Downie, C., 1963: 'Hystrichospheres' (acritarchs) and spores of the Wenlock Shales (Silurian) of Wenlock, England. Palaeontology, v.6, no.4, p.625-652, pl.91-92.
Downie, C., 1963: 'Hystrichospheres' (acritarchs) and spores of the Wenlock Shales (Silurian) of Wenlock, England. Palaeontology, v.6, no.4, p.625-652, pl.91-92.
