M. Vandermerwe, VESTIGIAL TEETH IN THE GENUS SCOTOECUS (MAMMALIA, CHIROPTERA) - ADAPTED DENTAL FORMULAS FOR VESPERTILIONIDS WITH VESTIGIAL TEETH, South African journal of zoology, 32(3), 1997, pp. 92-94
Some members of the genus Scotoecus Thomas, 1901 have an inconspicuous
vestigial tooth wh ich occurs on both sides of the upper jaw between
the canine and following premolar. This tooth is regarded as permanent
premolar P-3 in vestigial form.