Hunting a Dinosaur
Yes, we did double-check the photograph. This image is probably a depiction of Civil War officers presenting with a pterodactyl, as it appears to be in most cases.
That is the apparent implication of the image, which isn’t anything like the only shot of cops from that era displaying dinosaurs. Although some people swear that the picture has been tampered with, others believe that dinosaurs may have survived longer than we ever imagined. I suppose we’ll just have to go find someone who can build a time machine and see for ourselves if they’re right or not.