Page One ate the Ryu Ryu no Mi, Model: Spinosaurus, an Ancient Zoan Devil Fruit that gives him the ability to transform into a spinosaurus hybrid and a full spinosaurus at will.
As a spinosaurus, he possesses tremendous strength, particularly in his jaws and tail, which are capable of effortlessly destroying buildings.
In his hybrid form, his arms become long enough to use in combat and possess great strength as well, being able to overpower a kick from a Raid Suit-enhanced Sanji and send Sanji flying through several buildings.
In the lastest chapter Oda updated Page One’s Zoan Form design as new fossils are found:
*by Pink-neck-Steven