Approximately 55,000,000 BC: Color vision first appears in prosimians and other species (which eventually will begat primates)
-- Shedding light on the origin of primate color vision, Contact: Sharon Parmet
sparmet@mcis.bsd.uchicago.edu
773-702-6241
University of Chicago Medical Center , 3 NOVEMBER 1999, EurekAlert! (http://www.eurekalert.org)