(Dinosaur genus) may pertain-to a late cretaceous period.Logical formLearned from1 sentences. Mammals can be from cretaceous periods.Logical formLearned from1 sentences. Conifers can be widespread in a cretaceous period.Logical formLearned from1 sentences. Sedimentary deposits can be constituted-of-or-filled-with cretaceous age.Logical formLearned from1 sentences. Strata may pertain-to a cretaceous period.Logical formLearned from1 sentences. Upheavals may begin during a cretaceous period.Logical formLearned from1 sentences.