Ordovician Period

Timeline created by 14crowleyj
  • Period: to

    Ordovician time period

  • Glaciation of Gondwana

    Glaciation of Gondwana
  • Nautiloids

    Nautiloids
  • Brachiopods

    Brachiopods
  • Hirnantian

    Hirnantian
  • Soil Formation

    Soil Formation
  • Cryptospores

     Cryptospores
  • Katian

    Katian
    Spore threads
  • Start of Andean-Saharan ice age

    Start of Andean-Saharan ice age
  • Pteraspidomorphi

    Pteraspidomorphi
    early to late
  • Crinoids

    Crinoids
  • Brachiopods

    Brachiopods
  • Echinoderms

    Echinoderms
  • Sandbian

    Sandbian
  • Gondwana moving over South pole

    Gondwana moving over South pole
  • second largest mass extinction of all time

    second largest mass extinction of all time
    Wiped out almost half of all marine life