Septarium

[sep'teәriәm]

Definition

(n.) A flattened concretionary nodule, usually of limestone, intersected within by cracks which are often filled with calcite, barite, or other minerals.

Edited by Julius

Definition

n. an ovate flattened nodule of argillaceous limestone or ironstone—turtle-stone:—pl. Septā′ria.—adj. Septā′rian.

Edited by Lester