"Tertiary period" Quotes from Famous Books
 ... changes, there being a definite relationship between the chemical constitution of the petroleum and the age of the strata in which it is found. It is almost certain that in the most recent alluvial formations no oil is ever found, its latest appearance being in the rocks of the tertiary period, the place where the solid paraffin is almost exclusively met with; thus helping to show that the latter has been formed from the decomposition of the oil, and is not a residue remaining after the oil has been distilled off. To this conclusion ...
— Scientific American Supplement, No. 829, November 21, 1891 • Various
... Tertiary period the whole valley of Mexico was one great lake. Whether the proportion of water to land had adjusted itself before the country was inhabited, or whether during historical times the lakes were still gradually diminishing by the excess of evaporation over the quantity of water supplied by rain and ...
— Anahuac • Edward Burnett Tylor
... forms of life are rendered possible, than where recurrent seasons of cold and scarcity reduce the possibilities of life to a minimum. Geology furnishes us with another reason, in the fact, that throughout the tertiary period tropical conditions prevailed far into the temperate regions, so that the possibilities of colour development were still greater than they are at the present time. The tropics, therefore, present to us the results of animal development in a much larger area ...
— Darwinism (1889) • Alfred Russel Wallace
... that the equine quadrupeds of the Quaternary period do not differ from existing Equidae in any more important respect than these last differ from one another; and he would know that it is, nevertheless, a well-established fact that, in the course of the Tertiary period, the equine quadrupeds have undergone a series of changes exactly such as the doctrine of evolution requires. Hence sound analogical reasoning justifies the expectation that, when we obtain the remains of Pliocene, Miocene, and Eocene Anthropidae, they will present ...
— Freedom in Science and Teaching. - from the German of Ernst Haeckel • Ernst Haeckel
... much more closely related (in having the giraffe, hippopotamus, and certain musk-deer) to southern Africa than it now is; for southern and eastern Africa deserve, if we divide the world into five parts, to make one division by itself. Turning to the dawn of the Tertiary period, we must, from our ignorance of other portions of the world, confine ourselves to Europe; and at that period, in the presence of Marsupials{393} and Edentata, we behold an entire blending of those mammiferous forms which now eminently characterise ...
— The Foundations of the Origin of Species - Two Essays written in 1842 and 1844 • Charles Darwin |
