Extinct Era on Instagram: "Comment “Nest” to get the link to our Prehistoric Newsletter and join for free. Tyrannosaurus rex reproduction is still full of unknowns because no confirmed eggs, embryos, or nests have been directly assigned to this species. What we do know is that T. rex laid eggs, and a study has reported medullary bone in at least one individual, which suggests a reproductively active female. Everything else, including what the nest looked like, how many eggs were in a clutch, and