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Gateway to the Paleobiology Database

Vendian and Cambrian Stages

Authorizer: J. Alroy   Enterer: J. Alroy

Continent: global   Rank of each interval: age/stage

Basis of scale: paleontological  

Reference: W. B. Harland et al. 1990

Comments: Harland et al. define no stages in the early Ordovician

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