Now, the fossiliferous strata of our globe afford similar proofs of varying climatic and physical conditions.
"Geology"
James Geikie
Moreover, if we extended our research, we should soon discover that similar wide differences actually obtained between many of the limestones themselves and other fossiliferous strata of our country.
"Geology"
James Geikie
The cause of this lies in the fact that the fossiliferous strata are of different ages; they have not all been formed at approximately the same time.
"Geology"
James Geikie