Re dinosaur

why have nobody wrote anything on dinosaurs yet?

this is a story about a hybrid dinosaur in a fantasy world

monster ranks corresponds to adventurer ranks

G-(very weak beginner)F-(beginners)E-(ordinary strong men)D-(average Knight)C-(high tier knights)B-(stong)A-(very strongS-(highest in the world)SS-(hero and demon king)SSS-(the demon god Beliel and human goddess Sophia, dragon king Fafnir)XXXXXXZZZZZZ (CLOSE TO GOD LEVEL)