Stennian

== English == === Adjective === Stennian (not comparable) (geology) Of a geologic period within the Mesoproterozoic era from about 1200 to 1000 million years ago. === Proper noun === Stennian (geology) The Stennian period. ==== Translations ==== === See also === Appendix:Geologic timescale === Anagrams === stannine