And the first known bird only makes its appearance in the oolite, about half-way through that latest period. |
Cornbrash, so called from its 'brashy' or rubbly nature, an earthy oolite yielding fair land for corn. |
In the process of being buried under other sediments, these ooids can fuse into a solid mass of sedimentary rock called oolite. |
That part of the cliffs which consist of lias, the oolite series, and chalk, decays slowly. |
The Plaine, resting on oolite limestone, is treeless but fertile. |
The examples of mammalia, above alluded to, are confined to the Trias and the oolite. |