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Nuculanida 
Summary
Nuculanida is an order of very small saltwater clams, marine bivalve molluscs in the subclass Protobranchia.
| Nuculanida | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Protobranchia |
| Order: | Nuculanida Carter, D. C. Campbell & M. R. Campbell, 2000 |
| Families | |
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See text | |
| Synonyms | |
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Nuculanoida | |
Description edit
These bivalves are distinguished by the presence of relatively primitive, "protobranchiate" gills. There are a row of short teeth along the hinge of the shell. The shells are often internally nacreous.[1]
Families edit
Families within the order Nuculanida include:
- Bathyspinulidae Coan & Scott, 1997
- Lametilidae
- Malletiidae H. and A. Adams, 1858
- Neilonellidae Schileyko, 1989
- Nuculanidae H. Adams & A. Adams, 1858
- Sareptidae Stoliczka, 1871
- Siliculidae Allen and Sanders, 1973
- Tindariidae Verrill and Bush, 1897
- Yoldiidae Habe, 1977
- Praenuculidae Mcalester, 1969 (?)
- Pristiglomidae Sanders and Allen, 1973 (?)
References edit