Nuculidae is a family of small saltwater clams in the order Nuculida. Species in this family are commonly known as nut clams.[1]
| Nuculidae Temporal range: Paleozoic to Present | |
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| Two views of a left valveofAcila cobboldiae from the early Pleistocene of the Netherlands | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Nuculida |
| Superfamily: | Nuculoidea |
| Family: | Nuculidae Gray, 1824 |
| Genera | |
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See text | |
The nomenclature of the Western European species in this family is still uncertain. Their systematics have been based mainly on their feces.[2]