Figure 2 in New rodent assemblages from the Eocene Dur At-Talah escarpment (Sahara of central Libya): systematic, biochronological, and palaeobiogeographical implications

Figure 2. Synthetic stratigraphical section and magnetostratigraphy of the Dur At-Talah sedimentological sequence. A, synthetic stratigraphical section showing the relative position of the two microvertebrate levels (DT-Loc1 and DT-Loc2) in the 'Bioturbated Unit' (Idam Unit after Wight, 1980). The small black arrows situated on the right of the stratigraphical column indicate the position of sampling sites for the magnetostratigraphical study. LOB, last oyster bed (marine). B, latitude of virtual geomagnetic pole of ChRM (characteristic component magnetization) as a function of stratigraphical level, and polarity column. C, part of the Palaeogene geomagnetic polarity time scale (from Gradstein, Ogg & Smith, 2004) and the different hypotheses of magnetic polarity correlations proposed in the text (dotted and smooth lines).