A Gun for Dinosaur

[A Reginald Rivers story.] A time machine that transports back to the age of dinosaurs is invaluable to the research scientists at Washington University, but the extraordinary costs of running the machine has forced the university to enter into a business arrangement with the Rivers and Aiyar big-game safari company. For an exorbitant fee, Reginal Rivers and his partner Raja Aiyar will escort you on a dinosaur hunt in the eon of your choice ... provided you can handle the wide-gage weaponry required for bringing down the largest prey to ever walk the earth. Listen closely as Reginald recalls the tragic events that resulted in the implementation of this now-strict policy-