Lioglyphostoma rusum is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

The area behind the periphery is broadly and steeply sloping, the much narrower portion in front of it undercut.

There are 14 additional primaries without intercalated secondaries upon the body whorl and the columella, the lirae a little more sharply defined and less closely spaced anteriorly.

The outer lip is arcuate, varicated a little behind the margin, the edge thin, sharp, and finely crenulated.

The posterior sinus is very broad and deep, slightly constricted at the entrance, symmetrically disposed between the suture and the outer margin of the fasciole.

The parietal glaze is for the most part so thin that the spiral sculpture may be traced through it but very heavy near the entrance to the sinus.

[2] Fossils have been found in Miocene strata of the Alum Bluff Formation in Florida, USA.