Fig. 2 in The beginning of a success story: basalmost members of the extant ophiuroid clade from the Silurian of Gotland, Sweden

Fig. 2. Stratigraphic framework of Gotland, with the stratigraphic positions of localities sampled for ophiuroids alongside identified Silurian events (modified from Eriksson & Calner 2005, with chronostratigraphic ages after Melchin et al. 2020).