This article is about the genus. For shells of the genus in an archaeological context, see 
Glycymeris (shells).
 
Glycymeris
 Temporal range:   | 
 | 
| Fossil shells of a Glycymeris species from the Upper Pliocene | 
| Scientific classification  | 
| Domain: | 
Eukaryota | 
 
| Kingdom: | 
Animalia | 
 
| Phylum: | 
Mollusca | 
 
| Class: | 
Bivalvia | 
 
| Order: | 
Arcida | 
 
| Family: | 
Glycymerididae | 
 
| Genus: | 
Glycymeris da Costa, 1778 | 
| Type species | 
Arca glycymeris Linnaeus, 1758
  | 
| Synonyms | 
- Axinaea Poli, 1791
 
- Axinaea (Pectunculus) Lamarck, 1799
 
- Axinaeoderma Poli, 1795
 
- Glycimeris auctt  (misspelling of genus)
 
- Glycymerella Woodring, 1925
 
- Glycymeris (Axinola) Hertlein & Grant, 1972
 
- † Glycymeris (Chevronia) Moerdijk & van Nieulande, 2000  · alternate representation
 
- Glycymeris (Glycymeris) E. M. da Costa, 1778 · alternate representation
 
- Glycymeris (Glycymerula) Finlay & Marwick, 1937 · alternate representation
 
- Glycymeris (Tucetilla) Iredale, 1939 · alternate representation
 
- Glycymeris (Tucetonella) Habe, 1961 · alternate representation
 
- Pseudaxinea Monterosato, 1892
 
- Tuceta Röding, 1798
 
- Tucetilla Iredale, 1939
 
- Veletuceta Iredale, 1931
 
  | 
Glycymeris, common name the bittersweet clams, is a genus of saltwater clams, marine bivalve molluscs in the family Glycymerididae.