"Marker" - Any non-tomb mortuary structure which marks a below-grade burial, but does not contain an interment and whose form is often sculptural.

Compound Marker: A multiple element marker.

Table: A horizontal tablet supported by individual uprights, often in the form of a table.

Basal: A horizontal tablet supported by a low solid wall base. (Resembles a platform tomb but does not house a burial within the structure.)

Pyramid: A freestanding architectural form with four adjacent triangular walls that meet at a common apex and rest on a quadrilateral base.

Die: Tomb with a prominent die, or middle portion of a pedestal between a base and the surbase, also called a dado.

Pedestal: Any combination of column, obelisk, urn, or sculpture surmounting a pedestal or pedestal-base.

Column: A full or truncated single pillar standing alone as a monument.

Obelisk: A monumental, four-sided stone shaft, usually monolithic and tapering to a pyramidal tip.

Other: Any architectural or sculptural combination.