Gateway to the Paleobiology Database

Bergström et al. Ordovician Stages of Webby et al.

Authorizer: J. Alroy   Enterer: J. Alroy

Continent: global   Rank of each interval: age/stage

Basis of scale: paleontological  

Reference: S. M. Bergström et al. 2006

Comments: renaming of Gradstein et al. stages

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