Upper Ordovician
preferred label: اردویسین فوقانی @fa
type: Concept
related: Siahu Formation

Siahu Formation
related: Upper Ordovician
related: Ordovician
related: Zagros Zone
related: Paleozoic
preferred label: سازند سیاهو @fa
type: Concept

Ordovician
preferred label: اردویسین @fa
type: Concept
related: Siahu Formation

Zagros Zone
preferred label: زون زاگرس @fa
type: Concept
related: Siahu Formation

Paleozoic
preferred label: پالئوزوئیک(دوران) @fa
type: Concept
related: Siahu Formation