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Pterospathodus amorphognathoides angulatus
571
Type
Zone
Age range
436.4–435.8
Ma
International Timescale
Llandovery
Telychian
Conodont Zonation
Pterospathodus amorphognathoides lennarti
Pterospathodus amorphognathoides angulatus
Pterospathodus eopennatus
436.40
436.35
436.30
436.25
436.20
436.15
436.10
436.05
436.00
435.95
435.90
435.85
435.80
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