Senonian

• (a.) In european geology, a name given to the middle division of the Upper Cretaceous formation.
Found on http://thinkexist.com/dictionary/meaning/senonian/

Senonian

Se·no'ni·an adjective [ French sénonien , from the district of Sénonais , in France.] (Geol.) In european geology, a name given to the middle division of the Upper Cretaceous formation.
Found on http://www.encyclo.co.uk/webster/S/67
No exact match found