page_title: Norian
section_title: Stratigraphic definitions
hierarchical_section_title: Norian / Stratigraphic definitions
caption_attribution_description: Čeština: Replika otisku tříprsté stopy českého dinosaura (či dinosauromorfa) od Červeného Kostelce. Byla objevena na pískovcové desce a má stáří kolem 215 milionů let (pozdní trias). Délka stopy činí 14 centimetrů. Ilustrace na dolní straně snímku je dílem ilustrátora Petra Modlitby. Fotografie pořízena na výstavě mechatroniky a dinosauřích modelů v Technickém muzeu v Brně. English: Cast of a tridactyl theropod dinosaur footprint from Červený Kostelec (Czech Republic). Footprint is 14 cm long and hails from Upper Triassic strata.
context_page_description: The Norian is a division of the Triassic geological period. It has the rank of an age or stage. The Norian lasted from ~227 to 208.5 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian.
context_section_description: The Norian was named after the Noric Alps in Austria. The stage was introduced into scientific literature by Austrian geologist Edmund Mojsisovics von Mojsvar in 1869.
  The Norian stage begins at the base of the ammonite biozones of Klamathites macrolobatus and Stikinoceras kerri, and at the base of the conodont biozones of Metapolygnathus communisti and Metapolygnathus primitius. A global reference profile for the base (a GSSP) had in 2009 not yet been appointed.
  The top of the Norian (the base of the Rhaetian) is at the first appearance of ammonite species Cochloceras amoenum. The base of the Rheatian is also close to the first appearance of conodont species Misikella spp. and Epigondolella mosheri and the radiolarid species Proparvicingula moniliformis.
  In the Tethys domain, the Norian stage contains six ammonite biozones:
  zone of Halorites macer
  zone of Himavatites hogarti
  zone of Cyrtopleurites bicrenatus
  zone of Juvavites magnus
  zone of Malayites paulckei
  zone of Guembelites jandianus
caption: Cast of a tridactyl footprint of a theropod dinosaur from the Norian of the Czech Republic.
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