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Senonian

adjective
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Se·​no·​nian | \ sə̇ˈnōnēən, -nyən \

Definition of Senonian

: of or relating to a subdivision of the European Cretaceous

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History and Etymology for Senonian

French sénonien, from Latin Senones, ancient people of central Gaul + French -ien -ian

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“Senonian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Senonian. Accessed 4 Jul. 2020.

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