Was there dinosours in biblical times?

That depends on what you think "dinosaur" means. Scientists are not sure about that word, so all we can say is "What are you talking about?"

Here's a tip: you can go to www.biblegateway.com/ and search a word, such as "leviathan", and when you have read all those verses you will know exactly as much as anybody else who has read those verses. But you can't trust anybody else to tell you what those verses say. You have to read them yourself to get the straight information.