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Where to find Dinosaurs

What types of sediments are best for finding dinosaur bone?

Excellent(3)-Good(2)-Poor(1)
  
                    siltstone
                    mudstone
                    muddy-sandstone
                    fine grain sandstone
                    medium grain sandstone
                    coarse grain sandstone
                    pebbly conglomerates

                    muddy-limestone
                    lithographic limestone
                    fossiliferous limestone