The oldest known mammal species to evolve on Earth was a small shrew-like creature known as Juramaia sinensis which lived about 160 million years ago. Descended testicles are a mammalian trait thought to have been present in the earliest mammal species. So it's quite likely that anything 160 million years old is literally old as balls.
@InvaderXan okay but if it’s that old, how do we know what any fleshy features looked like?
@troodon @InvaderXan that’s what I mean, I’d assume inner ischia or pubis showing muscle attachments but wouldn’t that mostly show the crus penis? And you’d need a really unflattened pelvis or fleshy impressions so if we have those that’s a seriously awesome fossil!