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Gateway to the Paleobiology Database

Webby et al. Ordovician of North America

 Interval Maximum correlate   Minimum correlate Ma
Cincinnatian Caradoc Ashgill
452.5
Mohawkian Caradoc
457.5
Whiterockian Arenig Caradoc
472
Ibexian Tremadoc Arenig

base shown as going somewhere into the Cambrian, so base estimate is a minimum

490

Authorizer: J. Alroy   Enterer: J. Alroy

Continent: North America   Rank of each interval: epoch/series

Basis of scale: paleontological  

Reference: B. D. Webby et al. 2004

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