Ossuary is a white marking named for its skeletal appearance.
A strange cousin to Overo, it spreads from the barrel outwards to the legs and "edges" of the body.
Ossuary causes irregular spreading of face markings, including bald face markings or irregular "skull" markings.
Ossuary should have crisp edges, which may be smooth or jagged.
Ossuary may appear to be symmetrical, but this is not a requirement.

Genotype: Os_
Locus:  Not shared with any known genes

• Coat: Ossuary is a white marking.
• Mane: White where marking touches.
• Skin: Pink underneath marking.
• Eyes: Can be blue, even if the marking does not touch them.
• Hooves: Cream where marking touches.

Range:

• Minimum: Ossuary can be hidden entirely.
• Maximum: Skeleton markings that spread out from the sides of the barrel. White markings should not "cross" the center of the horse anywhere but the belly, topline, or tail.

Interactions:

• ❗ Lethal White: Homozygous Ossuary (OsOs) and/or the combination of Overo and Ossuary (nO & nOs) result in a fatal condition known as 'Lethal White Syndrome.'  If a breeding results in a foal with OsOs or nO nOs, that foal cannot be born. Slots and items will still be consumed, so plan your breedings with care!