Pragian

EtymologyName formalityFormalName ratified1985Usage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionFAD of the conodonts and Morph betaLower boundary GSSPVelká Chuchle quarry, Prague, Czech Republic
50°00′53″N14°22′21″E / 50.0147°N 14.3726°E / 50.0147; 14.3726Lower GSSP ratified1989Upper boundary definitionFAD of the conodont Polygnathus kitabicusUpper boundary GSSP, Uzbekistan
39°12′00″N67°18′20″E / 39.2000°N 67.3056°E / 39.2000; 67.3056Upper GSSP ratified1995

The Pragian is one of three faunal stages in the Early Devonian Epoch. It lasted from 413.02 ± 1.91 million years ago to 410.62 ± 1.95 million years ago. It was preceded by the Lochkovian Stage and followed by the Emsian Stage. The most important Lagerstätte of the Pragian is Rhynie chert in Scotland. It is named after the city of Prague. The GSSP is located within the at Velká Chuchle, Prague.

In North America the Pragian Stage is represented by Siegenian or Deerparkian time.