When taming a rhyniognatha the pop out as BABYS but depending on your breeding stats then can pop out of the dino in less then 2 minutes so prepare a saddle so you don’t have to scavenge around getting the mats for it.

I found a 200 armor saddle in a ocean loot crate on lost island

The Saddle is relatively unlocked around lvl 90 It’s a 2 seater, and can be publicly seated, rhyinognatha, is one of the fastest fliers in the game, making this creature really good for transport and moving around, Blueprints? As of yet to be found