Might be. Thought that Oda would go full mainstream on T-Rex one and make it mythical only for the fan service rofl :D Then again, the time has come for Oda to show T-Rex, Titanoboa and Megalodon (ancient version of Uo Uo no Mi maybe?) fruits.
Then again, there are many options for Tori Tori no Mi and Hebi Hebi no Mi types and theory of having only one fruit per type may collapse alltogether. (I wish to see Griffin and Basilisk fruits lol :D)