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Jurassic Forum » GSSP and Working Group discussions » Berriassian WG & J/K boundary discussions » Neocomian, Berriasian, Valanginian (where is beginning of the Cretaceous System?)
Neocomian, Berriasian, Valanginian
mhornДата: Thursday, 12.02.2009, 12:47 | Сообщение # 1
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here we can discuss different proposals concerning J/K boundary at stage level
Middle Jurassic - Lower Cretaceous ammonites & aptychi
 
Jurassic Forum » GSSP and Working Group discussions » Berriassian WG & J/K boundary discussions » Neocomian, Berriasian, Valanginian (where is beginning of the Cretaceous System?)
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