This geological time scale, presented as a clock, allows a better comparison of the relative lenght of each particular geological era or period. This form makes it easier to understand. It precedes the photo gallery "3d" of an amateur of paleontology and mineralogy, collecting minerals and fossils, but only an amateur. This site is designed as a recreational site. I hope that very serious amateurs will be very indulgent towards me and that they will not hesitate to correct my lack of knowledge. I thank them inadvance. Homo sapiens appears
at 11H 59' 52"

Read and sign my guest book

Each period : Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene and Pleistocene, is placed in its own corresponding era: Primary, Secondary, Tertiary or Quaternary, and will be illustrated by "3d" photos according to representative fossils available in my collection.
Others will follow as i find them or purchase them.