Tyrannosaurus Rex Articles

• Fossils
  Early Mammals
  Origin of Life
  Evolution
  Dinosaurs
  Paleontology
   
  

  Smilodon

  Smilodon means knife tooth, an entirely appropriate name given its enormous fangs. The smilodon species are also known as Saber-Toothed Cats (which is inaccurate because there are other, unrelated ... > more
• Fossils
  Origin of Life
  Dinosaurs
  Early Climate
  Paleontology
  Human Evolution
   
  

  Gondwana

  The southern supercontinent Gondwana (originally Gondwanaland) included most of the landmasses which make up today's continents of the southern hemisphere, including Antarctica, South America, ... > more
• Extinction
  Dinosaurs
  Endangered Animals
  Endangered Plants
  Fossils
  Early Climate
   
  

  Extinction event

  An extinction event (also extinction-level event, ELE) occurs when a large number of species die out in a relatively short period of time. Since life began on Earth, a number of major mass ... > more
• Organic Chemistry
  Graphene
  Electronics
  Nanotechnology
  Chemistry
  Fossil Fuels
   
  

  Carbon-14

  Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon discovered on February 27, 1940, by Martin Kamen and Sam Ruben. Its nucleus contains 6 protons and 8 neutrons. Its presence in ... > more
• Fossils
  Geography
  Geology
  Origin of Life
  Extinction
  Environmental Policy
   

  Paleozoic

  The Paleozoic Era is a major division of the geologic timescale, one of four geologic eras. The Paleozoic includes six geologic periods; from oldest to youngest -- the Cambrian, Ordovician, Silurian, ... > more
• Ancient Civilizations
  Archaeology
  Cultures
  Lost Treasures
  Early Climate
  Early Humans
   
  

  Lascaux

  Lascaux is a complex of caves in southwestern France famous for its cave paintings. The original caves are located near the village of Montignac, in the Dordogne departement. They contain some of the ... > more
• Ancient Civilizations
  Volcanoes
  Archaeology
  Lost Treasures
  Natural Disasters
  Cultures
   
  

  Pompeii

  Pompeii is a ruined Roman city near modern Naples in the Italian region of Campania, in the territory of the commune of Pompei. It was destroyed during a catastrophic eruption of the volcano Mount ... > more
• Early Humans
  Human Evolution
  Anthropology
  Evolution
  Fossils
  Cultures
   
  

  Homo rudolfensis

  Homo rudolfensis is a fossil hominin species originally proposed in 1986 by V. P. Alexeev for the specimen Skull 1470 (KNM ER 1470). Originally thought to be a member of the species Homo habilis, the ... > more
• Geography
  Fossils
  Earth Science
  Geology
  Origin of Life
  Environmental Policy
   

  Cenozoic

  The Cenozoic Era is the most recent of the four classic geological eras. The Cenozoic is divided into two periods, the Palaeogene and Neogene, and they are in turn divided into epochs. The Palaeogene ... > more
• Fossils
  Environmental Policy
  Extinction
  Ice Ages
  Origin of Life
  Early Climate
   
  

  Cambrian

  The Cambrian is a major division of the geologic timescale that begins about 542 Ma (million years ago) at the end of the Proterozoic eon and ended about 488.3 Ma with the beginning of the Ordovician ... > more

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