paleozoic

     

The Paleozoic or Palaeozoic Era (from the Greek palaio, "ol" and zoe, "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic eon. The Paleozoic spanned from roughly 542 mya to roughly 251 mya (ICS, 2004), and is subdivided into six geologic periods; from oldest to youngest they are: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.

Trivia about paleozoic

  • Extinct before the dinosaurs ever walked, trilobites are key signature creatures of this "old animal" era
  • (Kelly of the Clue Crew gives the clue from Carlsbad Caverns National Park, New Mexico.) The fossils in Carlsbad Caverns include sponges, snails & trilobites, all from the Permian period, the tail end of this era whose name means "ancient life"

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