Eocene can be categorized as early epochs, It comes after the Paleocene Epoch and precedes the Oligocene Epoch. Eocene got it's origin from the Greek eos meaning ( Dawn). The beginning of Eocene produce the two appearance of two new groups of animals among the terrestrial vertebrates which are; the artiodactyls and the perissodactyls.
Eocene Epoch is reffered to as the second epoch in the order of the division of Cenozoic period . therefore, there is need for scientist to study information related to the Cenozoic era in other to know the geological time scale Eocene belongs to.
Dispersion forces increases with increase in relative molecular mass. The specie having the greater relative molecular mass definitely has greater dispersion forces. A rough estimation of the relative molecular masses of the species stated in the answer will reveal this fact.
