• After the Cambrian Period
  • Lasted about 45 million years
  • Much of the world was under water
  • Extreme diversity of life
  • Most organisms were aquatic
  • Orthoceras: squid-like creature
  • Nautiloids: shelled fish
  • Most of Earths land formed the super continent Gondwana
  • As the continent shifted south, glaciers accumulated
  • It caused an ice age
  • Sea levels dropped
  • Mass extinction occured
  • Few animals survied
  • Sea urchins and modern starfish are a few examples of those who survived
  • Some creatures started to venture onto land
  • Fossilized arthropods and plant spores were found on land
  • Named after the Ordovices
  • Ancient British tribe that lived near Wales
  • Wales is where they first discovered/studied fossils from the period
  • In conclusion...
  • World was mostly covered in ocean
  • Time of invertebrates
  • Ice age caused mass extinction

A little FF: Fun Fact for you The life-forms that survived the cataclysmic end of the Ordovician contributed to the genetic makeup of the animal kingdom to the present.

"The Ordovician Period." The Ordovician Period. N.p., n.d. Web. 16 Mar. 2017.

Society, National Geographic. "Ordovician Period, Ordovician Period Information, Prehistoric Facts." National Geographic. N.p., n.d. Web. 16 Mar. 2017.


http://palaeos.com/paleozoic/ordovician/ordovician.htm http://planetdi.startlogic.com/before_the_dinosaurs/ordovician_period.htm http://www.livescience.com/37584-paleozoic-era.html http://www.geo.fu-berlin.de/en/v/geolearning/gondwana/introduction/index.html http://www.geocraft.com/WVFossils/Carboniferous_climate.html http://www.dandebat.dk/eng-klima2.htm https://period6timeperiods.wikispaces.com/ordovician https://en.wikipedia.org/wiki/Ordovices https://www.pinterest.com/pin/343610646542295173/ https://www.indiana9fossils.com/?product=flexicalymene-retrosa-trilobite-1

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