Stephanolithiales Bown & Young, 1997
Muroliths with a distal/outer-cycle composed of non-imbricating elements, i.e. in side view, the sutures are vertical or near vertical. This feature is not distinguishable from imbrication in the LM. The term protolith is applied to this rim structure (Bown, 1987).
Mesozoic: Stephanolithiales