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Kockelella walliseri
578
Type
Zone
Age range
431.8–431.2
Ma
International Timescale
Wenlock
Sheinwoodian
Conodont Zonation
Kockelella ortus ortus
Kockelella walliseri
Ozarkodina sagitta rhenana
431.80
431.75
431.70
431.65
431.60
431.55
431.50
431.45
431.40
431.35
431.30
431.25
431.20
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