A dinosaur may live during a cretaceous period.Logical formLearned from5 sentences. A landscape can be cretaceous.Logical formLearned from5 sentences. Placentals may be knowned from a cretaceous period.Logical formLearned from5 sentences. Chalks can be cretaceous.Logical formLearned from5 sentences. A crust can be cretaceous.Logical formLearned from5 sentences. Rocks may date from a cretaceous period.Logical formLearned from5 sentences. (Marine sediments) can be cretaceous.Logical formLearned from5 sentences. Floras can be cretaceous.Logical formLearned from5 sentences. A batholith can be cretaceous.Logical formLearned from5 sentences. A bird can be cretaceous.Logical formLearned from4 sentences. A sedimentary rock can be cretaceous.Logical formLearned from4 sentences. Rocks may pertain-to a cretaceous period.Logical formLearned from4 sentences. Sand can be cretaceous.Logical formLearned from4 sentences. A genus can be cretaceous.Logical formLearned from4 sentences. Carbonates can be cretaceous.Logical formLearned from4 sentences.