Prophet Ezra revealed the origin of dinosaur here?

"At your command, the still and lifeless water brought forth living creatures, so that the nations might proclaim your wonderful works. Then you singled out two of the living creatures; you named one of them Behemoth and the other Leviathan. You separated them from each other because the sea wasn't big enough to hold them both. You let Behemoth live on a part of the land that you dried up on the third day of creation; it is a land of a thousand mountains. You let Leviathan live in the sea." — 2 Esdras 5:48-52


— Or were dinosaurs created by pre flood humans?

“the sons of men in those days took from the cattle of the earth, the beasts of the field and the fowls of the air, and taught the mixture of animals of one species with the other, in order therewith to provoke the Lord; and God saw the whole earth and it was corrupt, for all flesh had corrupted its ways upon earth, all men and all animals.”- Jasher Chapter 4:18 (Jasher is an apocryphal book)



— Book of Job description of Behemoth:

“Look at Behemoth, which I made along with you and which feeds on grass like an ox.
What strength it has in its loins, what power in the muscles of its belly! Its tail sways like a cedar; the sinews of its thighs are close-knit. Its bones are tubes of bronze, its limbs like rods of iron. It ranks first among the works of God, yet its Maker can approach it with his sword. The hills bring it their produce, and all the wild animals play nearby. Under the lotus plants it lies, hidden among the reeds in the marsh. The lotuses conceal it in their shadow; the poplars by the stream surround it. A raging river does not alarm it; it is secure, though the Jordan should surge against its mouth. Can anyone capture it by the eyes, or trap it and pierce its nose?"— Job 40:15-24