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Macrostrat
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Kockelella ranuliformis
576
Type
Zone
Age range
432.6–432.3
Ma
International Timescale
Wenlock
Sheinwoodian
Conodont Zonation
Ozarkodina sagitta rhenana
Kockelella ranuliformis
Pterospathodus pennatus procerus
432.60
432.58
432.56
432.54
432.52
432.50
432.48
432.46
432.44
432.42
432.40
432.38
432.36
432.34
432.32
432.30
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