Is reincarnation real, and why wasn't it mentioned in Islam despite evidence of its existence? And is the Quran's not mentioning dinosaurs considered a deficiency in it?

The belief in transmigration (metempsychosis) is delirium and falsehood. It contradicts the Quran, the Sunnah, reason, and sound human nature, and it is among superstitions. As for the absence of dinosaurs in the Quran and Sunnah, it is not a deficiency, for the Quran is a book of guidance that directs people to ponder over creations as proof of God's power and greatness. It is not intended to enumerate the types of existing or extinct animals.