Fig. 2 in New occurrence of the Ordovician eocrinoid Cardiocystites: Palaeogeographical and palaeoecological implications

Fig. 2. Correlation chart between main stratigraphic subdivisions proposed for the Upper Ordovician by the International Subcommission on Ordovician Stratigraphy (ISOS; modified from Webby et al. 2004; Bergström et al. 2006), North Gondwanan graptolite biozones (after Vannier et al. 2003; Webby et al. 2004; Finney 2005), lithostratigraphic units defined in the Anti−Atlas (after Destombes et al. 1985; Gutiérrez−Marco et al. 2003; Vecoli and Le Hérissé 2004), British regional time scale (after Webby et al. 2004; Finney 2005), and Bohemian regional time scale (after Prokop and Petr 1999; Vannier et al. 2003; Vecoli and Le Hérissé 2004). Abbreviations: G., Geniculograptus; D., Dicellograptus; N., Normalograptus.