Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Fossils -Any evidence or remains of past life. In December 2013, scientists reported, for the first time, the entire genome of a Neanderthal. The genome was extracted from the toe bone of a 130,000-year-old Neanderthal found in a Siberian cave. According to preliminary sequences, 99.7% of the base pairs of the modern human and Neanderthal genomes are identical, compared to humans sharing around 98.8% of base pairs with the chimpanzee.[5] 1) Permineralization – pore spaces are filled with minerals; organic material is replaced. • Examples: petrified wood; amber 2) Mold – a hollowed out impression 3) Cast – when a mold becomes filled with minerals or sediments 4) Original Preservation – remains of the actual life form • Examples: mammoth preserved by ice; bugs trapped in amber “Ginger Yuka,” baby mammoth from 10,000 years ago; still had organs inside. Original Preservation 5) Volcanic Ash 6) Tar Pits • An animal must be buried before it decays. • Hard parts like bones and shells are most likely to become fossils. • Fossils are usually found in sedimentary rocks (but the rock itself is not necessarily the fossil). • Fossils are used to correlate (match) rock layers. Ammonite index fossil from the Devonian. • Index Fossil – organism that was abundant but only lived during a short time span; used to correlate rock layers Correlate the fossils to match the rock layers Fossil ID Game Prehistoric Animal Game