91. Glycymeris undata (Linnaeus, 1758)

Bathymetric distribution: 2–55 m —SW.

Geographical distribution: USA (North Carolina) to Brazil (MA to SP, SC)—WGD.

Remarks: Glycymeris americana (DeFrance, 1826) is listed by CTFB (2024), but Penna–Neme (1978) did not record G. americana from Brazil, based on Nicol (1953a). Rios (1994, 2009) recorded it as a synonym of G. undata .

References: Nicol (1953a), Penna–Neme (1978), Rios (1994, 2009), Agudo–Padrón et al. (2009).