This lectotype is 1 left valve. Photos of these specimens by Brandão, Simone Nunes, with code SB187,SB188 (i.e., beginning of the SEM photo file names are SB187,SB188). This valve was SeM imaged by J.e. Whittaker and published by Mazzini (2005, fig. 28.P–S). This specimen was photographed again by Brandão & Yasuhara (2013): Plate 1, fig. b.