A Reddit user recently found the exhibit, which, of course, has long been a conversation starter at MUJA, a museum that has over 8000 fossils (200 of them being dinosaurs, crocs, fish and tortoises). The copulating dinosaurs are actually replicas and a pseudo-guess on how dinosaurs mated, as no one really knows how they did the deed. The position seems a bit awkward as the girl T-Rex's tail could smack dude T-Rex in the face. Ah, messy logistics.
Either way, with this hilarious dinosaur exhibit, I think the MUJA has sky rocketed to the top of my non-existant "museums I want to go to list". [Reddit]