150 Years of The Origin of Species: The Historical Journey from Specimens to Species to Genes was a physical exhibit mounted in the University of Missouri's Ellis Library from March 5th to March 31st, 2009 to honor the 200th birthday of Charles Darwin and the 150th anniversary of the publication of his On the Origin of Species. The exhibition was part of the 2009 MU Life Sciences & Society Symposium sponsored by the Christopher S. Bond Life Sciences Center.

The exhibition traced the concept of biological variation from the Renaissance through the 20th Century using rare and historical books, illustrations and biological specimens. The exhibit contained items from the Rare Books and Special Collections Department of the MU Libraries, the MU Health Sciences Library Rare Book Room, as well as other university collections. Biological specimens were provided by the Enns Entomology Museum and the Glen Smart Collection of Waterfowl and Upland Game at the University of Missouri. The exhibit was curated by Michael Holland, Director of Special Collections, Archives, and Rare Books (SCARaB), with immeasurable help from the staff of the SCARaB Division, Anselm Huelsbergen, Alla Barabtarlo, Karen Witt, and Katie Carr.

The exhibit was formally opened by a presentation from Philosophy Professor Andre Ariew on Thursday the 5th of March at 1:00 in the Ellis Library Colonnade. His presentation was entitled "Darwinism Old and New." 

The original content of the HTML exhibition can be viewed at the Internet Archive. It was migrated into the Omeka content management system in 2021 by Kelli Hansen.