{{Short description|Family of bivalves}} {{Automatic taxobox | fossil_range = {{Geological range|Middle Triassic|Present}} | image = Entolium sp. DOT532.jpg | image_caption = ''Entolium'' sp. from Aalensis Zone, Luxembourg | taxon = Entoliidae | authority = Korobkov, 1960 | subdivision_ranks = Genera | subdivision = 5, see text }}

The '''Entoliidae''', also referred to as the '''entoliids''', are a taxonomic family of saltwater clams, marine bivalve mollusks in the order Pectinida. They are related to and are considered the ancestors of modern scallops. In the geological record the family contains at least seven species in five different genera, though only one is extant and it is very rare and cryptic, inhabiting the Caribbean and central west Pacific Ocean in small, disjointed populations.<ref name="ShumwayParsons2011">{{cite book|author1=Sandra E. Shumway|author2=Jay G.J. Parsons|title=Scallops: Biology, Ecology and Aquaculture: Biology, Ecology and Aquaculture|url=https://books.google.com/books?id=rSu_GLwLQmEC&pg=PA123|date=22 September 2011|publisher=Elsevier|isbn=978-0-08-048077-0|page=123}}</ref>

A significant morphological feature lacking in the entoliids but present in modern scallops is the ctenolium, a comb-like structure under the anterior auricle through which scallops are able to produce a byssal thread for attachment to a substrate. The entoliids did not/ do not secrete a byssal thread.

==Genera and species== Genera and species within the family Entoliidae include: * ''Entolium'' <small>Meek 1865</small> ** ''Entolium fossatum'' <small>Marwick 1953</small> ** ''Entolium utokokense'' <small>Imlay 1961</small> * ''Pectinella'' ** ''Pectinella sigsbeei'' <small>(Dall, 1886)</small> ** ''Pectinella aequoris'' <small>Dijkstra, 1991</small> * ''Pernopecten'' <small>Winchell 1865</small> * ''Somapecten'' * ''Syncyclonema'' <small>Meek 1864</small> ** ''Syncyclonema travisanus'' <small>Stephenson 1941</small>

==References== {{Wikispecies|Entoliidae}} {{Reflist}}

{{Taxonbar|from=Q2294881}}

Category:Entoliidae Category:Bivalve families