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Temporal range: Middle Triassic–Present
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinoida
Superfamily: Pectinoidea
Family: Entoliidae
Korobkov, 1960

5, see text

The Entoliidae, also referred to as the entoliids, are a taxonomic family of saltwater clams, marine bivalve mollusks in the order Pectinoida. 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.[1]

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[edit]

Genera and species within the family Entoliidae include:


  1. ^ Sandra E. Shumway; Jay G.J. Parsons (22 September 2011). Scallops: Biology, Ecology and Aquaculture: Biology, Ecology and Aquaculture. Elsevier. p. 123. ISBN 978-0-08-048077-0.