Nucinellidae is a
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of
bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...
s, in the
order
Order, ORDER or Orders may refer to:
* A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
...
Solemyida
Solemyida is an order of bivalve molluscs.
Families in the order Solemyida
* Manzanellidae Chronic, 1952
* Solemyidae
Solemyidae is a family (biology), family of saltwater clams, marine (ocean), marine protobranch bivalve mollusks in the or ...
. Its species are small and principally reside in deep-water environments. The species' average length is less than , the largest species being ''
Nucinella boucheti'' (La Perna, 2005) at a length of . The family's characteristic features include large
gill
A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...
s and reduced palps and their appendages;
oval shells with few
hinge teeth
Hinge teeth are part of the anatomical structure of the inner surface of a bivalve shell, i.e. the shell of a bivalve mollusk. Bivalves by definition have two valves, which are joined together by a strong and flexible ligament situated on the hin ...
; they possess a single
adductor muscle and one divided
foot
The foot (: feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is an organ at the terminal part of the leg made up o ...
exhibiting papillae.
The family contains two known genera: ''
Huxleyia'' and ''
Nucinella''. Speaking of ''Nucinella'', the genus' ligament system is of the simple arched type, lacking nymphae. Regarding the former, the system is "submerged" beneath its dorsal margin.
Genera and species
*''
Huxleyia'' (Adams, 1860)
**''
Huxleyia cavernicola'' (Hayami & Kase, 1993)
**''
Huxleyia concentrica'' (Verco, 1907)
**''
Huxleyia diabolica'' (Jousseaume, 1897)
**''
Huxleyia habooba'' (Oliver & Taylor, 2012)
**''
Huxleyia munita'' (Dall, 1898)
**''
Huxleyia pentadonta'' (Scarlato, 1981)
**''
Huxleyia sulcata'' (Adams, 1860)
*''
Nucinella'' (Wood, 1851)
**''
Nucinella adamsii'' (Dall, 1898)
**''
Nucinella boucheti'' (La Perna, 2005)
**''
Nucinella dalli'' (Hedley, 1902)
**''
Nucinella giribeti'' (Glover & Taylor, 2013)
**''
Nucinella kanekoi'' (Matsukuma, Okutani & Tsuchi, 1982)
**''
Nucinella maoriana'' (Hedley, 1904)
**''
Nucinella maxima'' (Thiele, 1931)
**''
Nucinella ovalis'' (Wood, 1840)
**''
Nucinella owenensis'' (Oliver & Taylor, 2012)
**''
Nucinella pretiosa'' (Gould, 1861)
**''
Nucinella serrei'' (Lamy, 1912)
**''
Nucinella subdola'' (Strong & Hertlein, 1937)
**''
Nucinella surugana'' (Matsukuma, Okutani & Tsuchi, 1982)
**''
Nucinella viridis'' (Matsukuma, Okutani & Tsuchi, 1982)
**''
Nucinella viridula'' (Kuznetzov & Schileyko, 1984)
References
Further reading
*
*La Perna, Rafael. "A gigantic deep-sea Nucinellidae from the tropical West Pacific (Bivalvia: Protobranchia)." Zootaxa 881 (2005): 1-10.
*
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External links
*
WORMS
Bivalve families
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