Genus Cardiomya A. Adams, 1864

Type-species (by monotypy)

Neaera gouldiana Hinds, 1843: 77 .

Description

Inequivalve, left valve slightly overlapping right valve along ventral margin, right valve overlapping left valve on dorsal margin of rostrum. External sculpture of radial ribs and commarginal growth lines. Hinge: left valve edentulous, right valve with a strong posterior lateral tooth. Ligament internal (Allen & Morgan 1981; Poutiers & Bernard 1995; Barroso et al. 2016; Machado et al. 2016; Oliveira et al. 2017).