Escarpments can be cretaceous.Logical formLearned from1 sentences. A limestone may contain ammonites of cretaceous age.Logical formLearned from1 sentences. Beds can be constituted-of-or-filled-with cretaceous age.Logical formLearned from1 sentences. Cretaceous ages may undergo subdivisions.Logical formLearned from1 sentences. Limestone may pertain-to a cretaceous period.Logical formLearned from1 sentences. Deposits of a formation may rest on limestone of a cretaceous period.Logical formLearned from1 sentences. Cretaceous limestones can be with beds.Logical formLearned from1 sentences. Cretaceous limestones may be found.Logical formLearned from1 sentences. Cretaceous limestones may be developed.Logical formLearned from1 sentences. Teleosteans can be cretaceous.Logical formLearned from1 sentences. Faunas may pertain-to a cretaceous period.Logical formLearned from1 sentences. Faunas of a cretaceous period may differ in some features.Logical formLearned from1 sentences. A life may pertain-to a cretaceous period.Logical formLearned from1 sentences. An area can be cretaceous.Logical formLearned from1 sentences. Tuffs can be constituted-of-or-filled-with cretaceous age.Logical formLearned from1 sentences.