Pyrgulina lecta -  Pyrgulina alveata is a species of very small sea snail a pyramidellid gastropod micromollusk. This genus is currently placed in the subfamily Chrysallidinae of the family Pyramidellidae. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Animal