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[7.5 myr]<br />
385.3 ± 2.6<br />
391.8 ± 2.7<br />
* Gradstein et al. 2004<br />
PREAT A ULB - Conférence Bouillon 7.12.2007<br />
Zonation std<br />
ET<br />
zonation parallèle à Polygnathus et Ancyro<strong>de</strong>l<strong>la</strong><br />
CHRONOSTRATIGRAPHIE<br />
1879 - 2001<br />
Middle<br />
Early<br />
Bultynck & Dejonghe 2001 Late