Berriasian

(redirected from Berriasian Stage)

Berriasian

[‚ber·ē′ā·zhən]
(geology)
Part of or the underlying stage of the Valanginian at the base of the Cretaceous.
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References in periodicals archive ?
In 1990 the acceptance by the International Commission on Stratigraphy (Subcommittee on Jurassic Stratigraphy) of the Tithonian (defined in SE France, Tethyan realm) as the last stage of the Jurassic system marked the first step towards the establishment of the Jurassic-Cretaceous boundary between the Tithonian and Berriasian stages, respectively (Wimbledon et al.