Orbigny is unwilling to believe that beds of the same nature with the Pampean formation ever underlie the ancient marine tertiary strata; and I was as much surprised at it as he could have been; but the vertical cliff at P.
Cerithium, so abundant in tertiary strata, and which still lives, is represented by no less than fourteen species.
The leaves of such plants are frequent in tertiary strata, and occur in the Cretaceous, though less plentifully (see Chapter 17).
On the other hand, Voluta, Fasciolaria, and other genera of univalve shells, usually met with only in tertiary strata, occur.
At the foot of these mountains, on the side both of the Adriatic and the Mediterranean, are found a series of tertiary strata, which form, for the most part, a line of low hills occupying the space between the older chain and the sea.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "tertiary strata" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
