Propebela exarata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
The length of the shell attains 12 mm.
The white shell has an ovate-fusiform shape and is clathrate. It contains 6 whorls. The longitudinal ribs are eminently pronounced and are crossed by transverse plicae.
This marine species occurs off Massachusetts, USA, Greenland, the Lofoten Islands and Nova Zembla, in the Kara Sea and the Arctic shores of Siberia; Arctic Ocean to Monterey, California
Fossils have been found in Greenland, Labrador, England and Spitsbergen.
