CASTLE ROCK, CO--(Marketwire - March 31, 2008) - AspenBio Pharma, Inc. (NASDAQ: APPY), an emerging bio-pharmaceutical company dedicated to the development of novel drugs and diagnostics for animals and humans, has appointed Dr. Mark J. Ratain as a new independent member of its board of directors. His appointment brings the total number of company directors to six, with four serving independently.