Sheckley, Robert. "Disquisitions on the Dinosaur"
Summary: Time travelers bring dinosaurs forward to ancient Rome, and various invading (in our timeline) armies decide not to invade.
Published: In Dinosaur Fantastic (eds. Mike Resnick and Martin H. Greenberg), DAW 1993, SFBC 1994.
Original in: English.
Translation: German by Barbara Slawig as "Abhandlungen ueber den Dinosaurier", in Das grosse Buch der Dinosaurier-Geschichten (ed. Mike Resnick and Martin H. Greenberg), Heyne 1993 (3453073932).