Work found, with species-group names introduced therein:
Simone, L. R. L. and A. Birman. 2006a. Two new species of the genus Margarites (Vetigastropoda: Trochidae) from Brazil. Novapex 7 13-16. [Stated date: 10 Mar 2006.] Margarites imperialis Margarites mirabilis