saceodic

Updated: May 29, 2025

Walls of the chambers traversed by fine tubules. Intermediate skeleton, composed of homogeneous shell substance, traversed by f. Stoloniferous passages connecting the chambers of the two tiers. e. Canal system in intermediate skeleton, showing the arborescent saceodic prolongations. Eozoon Canadense, Daw. Oldest known organic body.

Sir Charles Lyell - The Student's Elements of Geology