e-tutor.com - Online tutoring, learning, and homeschooling resources      Home    Enroll    Tour    Contact Us    Graphing Calculator         Dictionary Home    Index    About   
 
     
 

Definition of 'ordovician'

Noun

  1. from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
       Synonyms: Ordovician period


Get this dictionary without ads as part of the e-Tutor Virtual Learning Program.