. "The Progenitor Virus was discovered in the 1960s by Dr. James Marcus while researching protozoic life. It was found to react very well to the replicated atmosphere of ancient Earth."@en . . . . . "Progenitor Virus (Makino)"@en . . "The Progenitor Virus was discovered in the 1960s by Dr. James Marcus while researching protozoic life. It was found to react very well to the replicated atmosphere of ancient Earth."@en . . .