There is nothing in Islam specifically mentioning, by name, the Bermuda triangle, dinosaurs, asteroids, extra-terrestrials, etc, but their existence doesn't contradict with any of the Islamic teachings. As you know, the Qur'an is not a scientific and cultural book recording historical events and describing animals or other creatures. Rather, it is a book of guidance and advice that takes people from darkness and ignorance toward knowledge, enlightenment and faith. Still, the Qur'an has dealt with many subjects such as astronomy, geology, and the world of jinn etc. However, the objective behind mentioning such facts is to show that Allah has the Will and Power to create anything He wants for people to reflect on His Greatness. In this respect the Qur'an should not be considered as a scientific or academic guidebook. While the dinosaur and other natural phenomena and creatures are not specifically mentioned in the Qur'an, Allah states in the Qur'an in Surah Al-Anbiya' (The Prophets)(21) verse 16: 'We didn't create the heavens and the earth and all that is between them for a (mere) play'. Therefore, their existence must have an important role in the development and evolution of our world and the entire universe. In addition, famous interpreters of the Qur'an, such as al-Allousi (died in 1850 a.d.) state that there are several verses that may support the idea (it is yet to become mainstream knowledge) of the existence of other beings and creatures outside the earth. Among these verses are: Surah an-Nahl (16) verse 8: "And (He has created) horses, mules, and donkeys, for you to ride and use for show; and He has created (other) things of which ye have no knowledge.". Al-Allousi comments in 14/102-103 that the disbelievers are not better than the believers who have no doubts about the existence of creations of God that we (humans) don't know about (but which we believe in their existence). Another verse is in Surah Ta-Ha (20) verse 6: "To Him belongs what is in the heavens and on earth, and all between them, and all beneath the soil.". Al-Allousi further says (16/161) that what is "between them" are the creatures in the air and the clouds (that is: above humans) that we don't know about. A third verse is in Surah ash-Shoura (42) verse 29: "And among His Signs is the creation of the heavens and the earth, and the living creatures that He has scattered through them: and He has power to gather them together when He wills." Here, al-Allousi further explains that it is not unlikely that creatures in the entire heavens do exist with different shapes and looks. Having stated this, it is always important to understand that these verses are not specific proofs of the existence of Extra-terrestrials, but if scientific evidence proves their existence, then, they would be totally in line with Islamic teachings. Please note that a verse in the Qur'an should not be interpreted (or stretched out) with meanings beyond what it can handle.
Allah knows best.
