The word "dinosaur" wasn't a word until around 1850.
God made every kind of animal in Genesis. “Great sea creatures” would include the dinosaurs that lived in the sea. “beasts” and “everything that creeps on the earth” would include the land dinosaurs.
Job 40:15-24 the behemoth. God describes this beast as a creature that “eats grass like an ox,” “moves his tail like a cedar,” has “ribs like bars of iron,” and who is not disturbed by a flooding of the river. Hippos and elephants don't have tails like a cedar tree. Don't know what it is, but the description fits a large, plant-eating dinosaur.
In Job 41 the Leviathan. It has a mouth that is full of terrible teeth and a body that is covered with rows of scales that cannot be penetrated. He is so strong that, when he walks, the ground crashes. To him, iron is like straw and bronze is like rotting wood. God indicates that this creature cannot be captured or tamed, and that those who have tried will never do so again. T-Rex? Why, heck yeah!