Abstract.  The Induan and the Olenekian stages are recognized in the Lower Triassic.  The type
 locality for the Lower Induan is in the Central Himalayas.  The Upper Induan has its type locality in
 the Salt Range.  The Lower Induan comprises the Otoceras and Ophiceras beds.  Otoceras beds
 are best displayed in the Boreal Realm where they embrace the Concavum and Boreale zones.
 The Himalayan Woodwardi Zone is correlated with the upper part of the Boreale Zone and the
 basal part of the Ophiceras beds in the Boreal Realm.  The Upper Induan is started with the first
 appearance of meekoceratids.  This level easily is traced in the Tethyan as well es in the Boreal
 sections.  The upper boundary of the Induan Stage is drawn within the Ceratite sandstone (at the
 basal part of the Flemingianus Zone) in the Salt Range and at the base of the Hedenstroemi Zone
 in the Boreale Realm.  The Induan sections of the Central Himalayas, Kashmir, Nepal, China, Salt
 Range, Arctic Canada and Siberia are described.  The scheme of their zonal correlation is given.