Because at the time people wrote the bible dinosaurs had been discoverd due to the fact no one had dug a big enough hole to find them but had this being the case would they have included them in the narative?
According to Genesis, the earth was created in six days. Not many people take the "days" as literal days but rather periods of time.
Genesis describes the creatures of the sea being created first, followed by land animals, and humans last. This is a similar order to the theory of evolution, which means either God created them in this order, or ancient Hebrews had an uncanny insight into evolution.
Your question is very convoluted---look it up. Dinosaurs preexisted to what?
They are mentioned in the bible, not the word dinosaur since it was coined in about 1840 AD.
Look for words such as dragons behemoth fiery beast. Finally, the Bible is not a history book about animals but about the adaptation of man as he relates to his maker. Televisions are not mentioned but God had the technology for if he could create a universe, he certainly could develop a simple tool such a television. You sell God short.