Unfortunately, it"s not possible to tell if the psittacosaurus in question is male or female, or exactly what kinds of sexual organs they possessed, because its respective body parts are hidden within. This leaves dinosaurs with two possible mating strategies – the (shudder) so-called "cloacal kiss", in which two dinosaurs would have lined up their cloacas, with the male ejecting his semen directly into the female"s – a common strategy among birds– or the more familiar version, where there"s a penis involved (how crocodiles do it).