Sandstone vs Arkose Characteristics Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Sandstone vs Arkose characteristics assist us to distinguish and recognize rocks.
The first such period is referred to as the Paleolithic, or Old Stone Age. The Old Stone Age began about 2 million years ago with the development of the first tools by Homo habilis and lasted until around 12,000 years ago.
Paleolithic timeline - Paleolithic lifestyle - Paleolithic life expectancy. The Paleolithic era is also fondly known as the Stone Age period. It existed between (2.5 million - 20000 years ago). The era was beginning of small innovations carried on within the group for survival. It began with preparing and manufacturing tools and hunting.