Kindblade Formation
preferred label: سازند کیندبلاد @fa
type: Concept
broader: Lower Ordovician

Manitou Formation
preferred label: سازند مانیتو @fa
type: Concept
broader: Lower Ordovician

Lower Ordovician
narrower: Manitou Formation
narrower: Kingsport Formation
narrower: Beekmantown Group
narrower: Arenigian
narrower: Saint George Group
narrower: Shakopee Formation
narrower: Prairie du Chien Group
narrower: Mascot Dolomite
narrower: Ellenburger Group
narrower: El Paso Group
narrower: Tremadocian
narrower: Kindblade Formation
narrower: Smithville Formation
narrower: Fillmore Formation
related: Shirgesht Formation
related: Knox Group
related: Arbuckle Group
related: Pacoota Sandstone
related: Rose Run Sandstone
related: Upper Ordovician
related: Lashkarak formation
related: Deadwood Formation
related: Middle Ordovician
related: San Juan Formation
related: Ilebeyk Formation
type: Concept
preferred label: اردویسین زیرین @fa
broader: Ordovician

Kingsport Formation
preferred label: سازند کینگزپورت @fa
type: Concept
broader: Lower Ordovician

Beekmantown Group
preferred label: گروه بیک من تاون @fa
type: Concept
broader: Lower Ordovician

Arenigian
preferred label: آرنیجین @fa
type: Concept
broader: Lower Ordovician

Saint George Group
preferred label: گروه سنت جورج @fa
type: Concept
broader: Lower Ordovician

Shakopee Formation
preferred label: سازند شاکوپی @fa
type: Concept
broader: Lower Ordovician

Prairie du Chien Group
preferred label: گروه پریری دوچین @fa
type: Concept
broader: Lower Ordovician

Mascot Dolomite
preferred label: دولومیت ماسکوت @fa
type: Concept
broader: Lower Ordovician

Ellenburger Group
preferred label: گروه النبرگر @fa
type: Concept
broader: Lower Ordovician

El Paso Group
preferred label: گروه ال پاسو @fa
type: Concept
broader: Lower Ordovician

Tremadocian
preferred label: ترمادوسین @fa
type: Concept
broader: Lower Ordovician

Smithville Formation
preferred label: سازند اسمیتویل @fa
type: Concept
broader: Lower Ordovician

Fillmore Formation
preferred label: سازند فیلمور @fa
type: Concept
broader: Lower Ordovician

Shirgesht Formation
preferred label: سازند شیرگشت @fa
type: Concept
related: Lower Ordovician

Knox Group
preferred label: گروه ناکس @fa
type: Concept
related: Lower Ordovician

Arbuckle Group
preferred label: گروه آربوکل @fa
type: Concept
related: Lower Ordovician

Pacoota Sandstone
preferred label: ماسه‌سنگ پاکوتا @fa
type: Concept
related: Lower Ordovician

Rose Run Sandstone
preferred label: ماسه‌سنگ رس ران @fa
type: Concept
related: Lower Ordovician

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

Lashkarak formation
preferred label: سازند لشکرک @fa
type: Concept
related: Lower Ordovician

Deadwood Formation
preferred label: سازند دیدوود @fa
type: Concept
related: Lower Ordovician

Middle Ordovician
preferred label: اردویسین میانی @fa
type: Concept
related: Lower Ordovician

San Juan Formation
preferred label: سازند سان جوان @fa
type: Concept
related: Lower Ordovician

Ilebeyk Formation
preferred label: سازند ایل‌بیک @fa
type: Concept
related: Lower Ordovician

Ordovician
preferred label: اردویسین @fa
type: Concept
narrower: Lower Ordovician