English

Adjective

Mesoproterozoic ‎(comparative more Mesoproterozoic, superlative most Mesoproterozoic)

1. (geology) Of a geologic era within the Proterozoic eon; comprises the Calymmian, Ectasian and Stennian periods from about 1600 to 900 million years ago, when the Rodinia supercontinent was formed.

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Proper noun

Mesoproterozoic

1. (geology) The Mesoproterozoic era.

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See also

• Appendix:Geologic timescale