- Source: Nuculanida
Nuculanida is an order of very small saltwater clams, marine bivalve molluscs in the subclass Protobranchia.
Description
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.
Families
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 (?)