Dillwynella texana is an extinct species of sea snail, a marine gastropod mollusk in the family Skeneidae.

[1] The shell contains four spiral, smooth, and shining whorls.

The body whorl is nearly smooth but shows a slight tendency to bear furrows or lines radiating from the suture.

The umbilicus is small.

[1] This marine species was found as a fossil in the Lower Claiborne Eocene, Texas.