1. 
   Posttertiary
   Post·ter'ti·a·ry adjective [ Prefix post- + tertiary .] (Geol.) Following, or more recent than, the Tertiary; Quaternary.
   Found op http://www.encyclo.co.uk/webster/P/135
   
   
2. 
   posttertiary
   <geology> Following, or more recent than, the Tertiary; Quaternary. ... Origin: Pref. Post- + tertiary. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?posttertiary
   
   
3. 
   Posttertiary
   • (a.) Following, or more recent than, the Tertiary; Quaternary.
   Found op http://thinkexist.com/dictionary/meaning/posttertiary/
   
   

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