Work found, with species-group names introduced therein:
Absalao, R. S. and E. C. Rios. 1987.Petaloconchus myrakeenae, a new species of Vermetidae from Brazilian waters (Molusca [sic]: Gastropoda). Revista Brasileira de Biologia 47 415-418. [Stated date: -- Aug 1987.] Petaloconchus myrakeenae