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Polygnathus costatus patulus
608
Type
Zone
Age range
395–393.47
Ma
International Timescale
Middle Devonian
Eifelian
Early Devonian
Emsian
Conodont Zonation
Polygnathus costatus partitus
Polygnathus costatus patulus
Linguipolygnathus serotinus
395.0
394.9
394.8
394.7
394.6
394.5
394.4
394.3
394.2
394.1
394.0
393.9
393.8
393.7
393.6
393.5
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