Entoliidae
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Entoliidae
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. 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'' Meek 1865 ** '' Entolium fossatum'' Marwick 1953 ** '' Entolium utokokense'' Imlay 1961 * ''Pectinella'' ** ''Pectinella sigsbeei'' ( Dall ...
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Pectinella Aequoris
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. 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'' Meek 1865 ** '' Entolium fossatum'' Marwick 1953 ** '' Entolium utokokense'' Imlay 1961 * ''Pectinella'' ** ''Pectinella sigsbeei'' ( Dall ...
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Entoliidae
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. 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'' Meek 1865 ** '' Entolium fossatum'' Marwick 1953 ** '' Entolium utokokense'' Imlay 1961 * ''Pectinella'' ** ''Pectinella sigsbeei'' ( Dall ...
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Pectinella Sigsbeei
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. 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'' Meek 1865 ** '' Entolium fossatum'' Marwick 1953 ** '' Entolium utokokense'' Imlay 1961 * ''Pectinella'' ** ''Pectinella sigsbeei'' ( Dall ...
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Pectinella
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. 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'' Meek 1865 ** '' Entolium fossatum'' Marwick 1953 ** '' Entolium utokokense'' Imlay 1961 * ''Pectinella'' ** ''Pectinella sigsbeei'' ( Dall ...
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Scallop
Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters. Scallops are a cosmopolitan family of bivalves found in all of the world's oceans, although never in fresh water. They are one of the very few groups of bivalves to be primarily "free-living", with many species capable of rapidly swimming short distances and even migrating some distance across the ocean floor. A small minority of scallop species live cemented to rocky substrates as adults, while others attach themselves to stationary or rooted objects such as seagrass at some point in their lives by means of a filament they secrete called a byssal thread. The majority of species, however, live recumbent on sandy substrates, and when they sense the presence of a p ...
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Pectinida
Pectinida is a taxonomic order of large and medium-sized saltwater clams, marine bivalve molluscs, commonly known as scallops and their allies. It is believed that they began evolutionarily in the late Middle Ordovician epoch; many species, of course, are still extant. 2010 taxonomy In 2010 a new proposed classification system for the Bivalvia was published by Bieler, Carter & Coan, revising the classification of the Bivalvia, including the order Pectinida.Bieler, R., Carter, J.G. & Coan, E.V. (2010) ''Classification of Bivalve families''. Pp. 113-133, in: Bouchet, P. & Rocroi, J.P. (2010), ''Nomenclator of Bivalve Families. Malacologia'' 52(2): 1-184 *Superfamily: Anomioidea **Family: Anomiidae (jingle shells) **Family: Placunidae (windowpane oysters & saddle oysters) *Superfamily: Plicatuloidea **Family: Plicatulidae (kittenpaws) *Superfamily: Dimyoidea **Family: Dimyidae (dimyidarian oysters) *Superfamily: Pectinoidea **Family: Entoliidae (entoliids) **Family: Pectinidae (s ...
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Taxonomy (biology)
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the evolu ...
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