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Seashell
A bivalve shell is the enveloping exoskeleton or shell of a bivalve mollusc, composed of two hinged halves or valves. The two half-shells, called the
Bivalve_shell
Class of molluscs
calcified exoskeleton consisting of a hinged pair of half-shells known as valves. As a group, bivalves have no head and lack some typical molluscan organs such
Bivalvia
Part of the bivalve shell
part of the anatomical structure of a bivalve shell, i.e. the shell of a bivalve mollusk. The shell of a bivalve has two valves and these are joined by
Ligament_(bivalve)
defined, often most prominent, highest part of each valve of the shell of a bivalve or univalve mollusc. It usually contains the valve's beak, the oldest
Umbo_(bivalve)
Kind of freshwater mollusc
Within the shell, the living soft tissue can be found: the mantle is a multifunctional, generally thin and fragile structure that line bivalve interiors
Freshwater_bivalve
Family of shellfish, many edible
by repeatedly clapping their shells together. Scallops have a well-developed nervous system, and unlike most other bivalves all scallops have a ring of
Scallop
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
Hinge_teeth
Exoskeleton of an animal in the phylum Mollusca
shell; in gastropods, it is a simple pit, whereas in bivalves, it forms a groove which will eventually become the hinge line between the two shells,
Mollusc_shell
Family of edible marine bivalve molluscs
A cockle is a marine bivalve mollusc. Although many small edible bivalves are loosely called cockles, true cockles are species in the family Cardiidae
Cockle_(bivalve)
Species of bivalve
noble pen shell and fan mussel, is a large species of Mediterranean clam, a marine bivalve mollusc in the family Pinnidae, the pen shells. It reaches
Pinna_nobilis
Main muscular system in bivalves
placement. Bivalve mollusks generally have either one or two adductor muscles. The muscles are strong enough to close the valves of the shell when they
Adductor_muscles_(bivalve)
Hard, protective outer layers created by an animal that lives in the sea
bivalves. In addition, not all mollusks have an external shell: some mollusks such as some cephalopods (squid and octopuses) have an internal shell,
Seashell
Topics referred to by the same term
of some animals Mollusc shell Bivalve shell Gastropod shell Shell, of a brachiopod Turtle shell Armadillo shell Electron shell or a principal energy level
Shell
Variety of families of Mollusca
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the
Oyster
Mollusc species native to the Americas
mercenaria), also known as the round clam, hard-shell (or hard-shelled) clam, or the quahog, is an edible marine bivalve mollusk that is native to the eastern shores
Hard_clam
Subclass of sessile marine crustaceans
Barnacle adults are sessile; most are suspension feeders with hard calcareous shells, but the Rhizocephala are specialized parasites of other crustaceans, with
Barnacle
Extinct class of molluscs
bivalves, but were later given their own class. They have a single shell in their larval stage, and the adult typically has a single, pseudo-bivalved
Rostroconchia
Form factor
alphanumeric keyboard/keypad, which can fold into contact together like a bivalve shell. Generally speaking, the interface components such as keys and display
Clamshell_design
Bivalve mollusk anatomic feature
indentation or inward bending in the pallial line on the interior of a bivalve mollusk shell's valves that corresponds to the position of the siphons in those
Pallial_sinus
Preserved remains or traces of organisms from a past geological age
Israel Calcite-recrystallized fossil shell of pentamerid brachiopods from Indiana Recrystallized bivalve shell with sparry calcite from Bird Spring Formation
Fossil
Topics referred to by the same term
bone joint Hinge line of bivalve shells Hinge teeth of bivalve shells Ligament (bivalve) or hinge ligament of a bivalve shell Molecular hinge, a molecule
Hinge_(disambiguation)
World's oldest clam (c. 1498 or 1499–2006)
Icelandic Shelf in a 1357-year proxy archive based on growth increments in the bivalve Arctica islandica". Palaeogeography, Palaeoclimatology, Palaeoecology.
Ming_(clam)
Historical currency using sea shells
marine bivalve Saxidomus sp. to make shell money. In Africa shell money was widely used as legal tender up until the mid 19th century. The shells of Olivella
Shell_money
Extinct genus of crustaceans from Wisconsin
raptorial appendages and compound eyes. The body is fully encased in a bivalve shell, with only the eyes protruding on stalks. The species' trunk is composed
Thylacares
Outermost layer of the shell in many shelled animals
gastropods and bivalves, but it is also found in cephalopods such as Allonautilus scrobiculatus. The periostracum is an integral part of the shell, and it forms
Periostracum
Crescent-moon shaped area on the shells of some marine bivalves
feature which is found in the exterior surface of the shells of some species of clams, bivalve mollusks, as for example in the family Veneridae and in
Lunule_(bivalve)
Aspein is an unusually acidic bivalve shell matrix protein, which may have important roles in calcium carbonate biomineralization. The Aspein gene (aspein
Aspein
Family of gastropods
similarity of the bivalved shells of Juliidae to those of bivalves does not mean that these snails are closely related to bivalves; this is an example
Juliidae
Species of bivalve
marine bivalve mollusc in the family Pharidae. It lives buried in the sand off the coasts of northwestern Europe. The two valves that make up the shell of
Ensis_ensis
Species of crab
carries an empty bivalve shell, a sprig of seaweed or a piece of debris instead. Lauridromia dehaani is a plump crab and has a carapace (shell) that is slightly
Lauridromia_dehaani
Nymph and goddess of fruitful abundance
Statuette of Pomona from Pompeii, holding a bivalve shell filled with fruit
Pomona_(mythology)
Calcium carbonate mineral
the crystal Thin section of calcite crystals inside a recrystallized bivalve shell in a biopelsparite Grainstone with calcite ooids and sparry calcite
Calcite
Topics referred to by the same term
A bivalve is a marine or freshwater mollusc with a shell composed of two valves. Bivalve may also refer to the following places in the United States: Bivalve
Bivalve_(disambiguation)
Articulating part of a mollusc shell
have two articulating shells or valves, which resemble those of a bivalve. This exceptional family is commonly known as the bivalved gastropods. Gastropods
Valve_(mollusc)
Phylum of invertebrate animals
Rotterdam Natural History Museum Shell Image Gallery Mussel Watch Programme (archived 2015) Online biomonitoring of bivalve activity, 24/7: MolluSCAN eye
Mollusca
Main opening of the shell, where the head-foot part of the body of the animal emerges
opening in gastropod shells, scaphopod shells, and also for Nautilus and ammonite shells. The word is not used to describe bivalve shells, where a natural
Aperture_(mollusc)
Common name for several kinds of bivalve mollusc
Clam is a common name for several species of bivalve mollusc. The word is often applied only to those that are deemed edible and live as infauna, spending
Clam
Species of bivalve
ocean quahog (Arctica islandica) is a species of edible clam, a marine bivalve mollusk in the family Arcticidae. This species is native to the North Atlantic
Arctica_islandica
Topics referred to by the same term
the free dictionary. Clamshell may denote anything resembling the bivalve shell of a clam: Scoop stretcher, another name for this patient transport
Clamshell
Species of bivalve
window shell, or jingle shell (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. It is edible, but valued more for its shell (and
Windowpane_oyster
Species of bivalve
is a species of saltwater clam, a marine bivalve mollusc in the family Veneridae, the venus clams. The shell of Lioconcha hieroglyphica reaches a maximum
Lioconcha_hieroglyphica
Species of mollusc
clams", or "Essex clams", are a species of edible saltwater clam, a marine bivalve mollusk in the family Myidae. Right and left valve of the same specimen:
Soft-shell_clam
pallial line is a mark (a line) on the interior of each valve of the shell of a bivalve mollusk. This line shows where all of the mantle muscles were attached
Pallial_line
Aspect of marine historical geology
aragonite shell and calcitic cementation The boring Palaeosabella in an Ordovician bivalve shell. The borings penetrated an inner aragonitic shell layer which
Calcite_sea
Species of bivalve
Anomia simplex, the common jingle shell, is a typical species of bivalve mollusc in the family of Anomiidae, sharing attributes to blue mussels, American
Anomia_simplex
Species of bivalve
species of the giant clam genus Tridacna. Giant clams are the largest living bivalve molluscs. Several other species of "giant clam" in the genus Tridacna are
Giant_clam
Jewelry made primarily of seashells
of clams (bivalves) and tusk shells (scaphopods). Occasionally shell jewelry is made from the shells of non-marine mollusks such as the shells of land snails
Shell_jewelry
Obsolete class of arthropods
the obsolete Maxillopoda. The Ostracoda have the body enclosed in a bivalve shell-covering, and are normally unsegmented. The Branchiopoda have a very
Entomostraca
Manmade objects resembling pearls
(from nautilus shells), mother-of-pearl pearl (from mother-of-pearl), and hinge pearl (from the hinge of bivalve shells). Spherical shell core coated with
Imitation_pearl
Species of bivalve
The razor shell, Ensis magnus, also called razor clam, razor fish or spoot (In Scots), is a bivalve of the family Pharidae. It is found on sandy beaches
Razor_shell
Hadrosaurid dinosaur genus from the Late Cretaceous
teeth to be identified in North America. Using radiometric dating of bivalve shells from the Woodbury Formation, the sedimentary rocks where the Hadrosaurus
Hadrosaurus
clam Pod razor Razor shell Sinonovacula Several species of bean clams Donacidae, including: Plebidonax deltoides Other bivalve species, including: Arctica
List_of_edible_molluscs
In anatomy, a resilium is part of the shell of certain bivalve mollusks. It is an internal ligament, which holds the two valves together and is located
Resilium
Genus of hermit crab
expanded lateral lobes, and a greatly reduced pleon concealed by a small bivalve shell the crab carries. The unique combination of these and other features
Patagurus
A resilifer is a part of the shell of certain bivalve mollusks. It is either a recess (a pit or groove of some sort) or a process, the function of which
Resilifer
Prehistoric engraved shell
The Pseudodon shell DUB1006-fL or Pseudodon DUB1006-fL is a fossil shell of the freshwater bivalve Pseudodon vondembuschianus trinilensis found at the
Pseudodon_shell_DUB1006-fL
Animals of the phylum Porifera
gastropod shells until the crab and sponge outgrow the shell, eventually resulting in the crab using the sponge's body as protection instead of the shell until
Sponge
Family of bivalves
saltwater clams sometimes known as pen shells. They are marine bivalve molluscs in the order Pteriida. The shells of bivalves in this family are fragile and have
Pinnidae
Species of bivalve
marginatus, common name "grooved razor shell" (Portuguese: lingueirão Italian: cannolicchio), is a species of marine bivalve in the family Solenidae. Biolib
Solen_marginatus
Extinct clade of lophophorates
carbonate or carbonaceous sclerites. Micrina and Paterimitra possess bivalved shells in their larval phases, which preserve characters that might position
Tommotiid
Anatomical structure which is part of the body of some aquatic molluscs
clamming. Many bivalves that have siphons can withdraw them completely into the shell when needed, but this is not true of all species. Bivalves that can withdraw
Siphon_(mollusc)
generally only preserved in enclosed spaces, such as a tightly-closed bivalve shell. Higher concentrations of phosphate in the sea water do not enhance
Phosphatization
Species of bivalve
Arca noae or the Noah's Ark shell is a species of bivalve mollusc in the family Arcidae. It is found in the Mediterranean Sea from low tide mark to a
Arca_noae
Capital city of the Khmer Empire
to 420 BC, using radiocarbon dating of bivalve shells found in graves with the dead. Finding these bivalve shells shows that from the 14th century and possibly
Angkor
Sedimentary rock classification
consisting of peloid sediment and sparry calcite cement in a recrystallized bivalve shell; Bird Spring Formation (Carboniferous) of southern Nevada, USA. Bioclasts
Folk_classification
Topics referred to by the same term
the central, most inverted portion of the eardrum Umbo (bivalve), part of a bivalve shell which was formed when the animal was a juvenile Umbo (conifer
Umbo
Extinct bivalve genus
bivalves, are the main points of evidence for this. Characterised by their large size relative to other bivalves of the Mesozoic, Caspiconcha shells are
Caspiconcha
Species of small freshwater animal
of the class Branchiopoda. Like other clam shrimps, Asmussia had a bivalved shell, which was its only preserved part, about 3 millimetres (0.12 in) long
Asmussia_murchisoniana
Type of purse made from shells
A shell purse is a type of coin purse that is made from whole or trimmed mollusk shells, especially from bivalve mollusc shells. These purses are of mainly
Shell_purse
Systems for grouping fossilised evidence of biological activity
evidence of predatory behaviour, such as the drill holes (borings) left in shells by carnivorous gastropods, or more dramatically, the bite marks found on
Trace_fossil_classification
Species of brachiopod
the Northern Atlantic ocean and Arctic ocean. This brachiopod has a bivalve shell with a lophophore feeding structure and a pedicle to attach itself to
Terebratulina_septentrionalis
Genus of bivalves
Pinna is a genus of bivalve molluscs belonging to the family Pinnidae. The type species of the genus is Pinna rudis. These bivalves are sessile suspension
Pinna_(bivalve)
Species of bivalve
mussel (Dreissena bugensis) is a species of freshwater mussel, an aquatic bivalve mollusc in the family Dreissenidae. It has a lifespan of 3 to 5 years.
Quagga_mussel
Family of bivalves
Mactridae, common name the trough shells or duck clams, is a family of saltwater clams, marine bivalve mollusks in the order Venerida. These clams have
Mactridae
Order of bivalves
clams, marine and freshwater bivalve molluscs in the subclass Heterodonta. The order includes such bivalves as soft-shell clams, geoducks and shipworms
Myida
Species of gastropod
areas and shallow tide pools among sea weed, coral remains, and empty bivalve shells. It can be found on and under rocks in shallow water and on exposed
Monetaria_moneta
Organic-inorganic composite material produced by some molluscs
most ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous
Nacre
The beak is part of the shell of a bivalve mollusk, i.e. part of the shell of a saltwater or freshwater clam. The beak is the basal projection of the oldest
Beak_(bivalve)
Form of Native American art
as the Quechan wore fenestrated gorgets made from bivalve shells and strung on vegetal cordage. Shell carving is experiencing a revival among Southeastern
Shell_gorget
Clade of gastropods
Cylindrobullidae, Volvatellidae, Oxynoidae, and Juliidae, the bivalved gastropods. The shell-less Plakobranchacea are grouped in six families, divided between
Sacoglossa
Species of bivalve
is a small saltwater clam, a marine bivalve mollusk in the family Tellinidae (the macomas and tellins). The shells are smooth, relatively flat, oval or
Limecola_balthica
Family of molluscs
Shipworms, teredo worms or simply teredo are a group of xylophagic marine bivalve molluscs in the family Teredinidae that consume wood submerged in saltwater
Shipworm
Geopetal structure in bivalve boring in coral; bivalve shell visible; Matmor Formation (Middle Jurassic), southern Israel.
Way_up_structure
Argument for the existence of God
We can no longer argue that, for instance, the beautiful hinge of a bivalve shell must have been made by an intelligent being, like the hinge of a door
Watchmaker_analogy
Species of bivalve
rigida, commonly called the rigid pen shell, is a species of bivalve mollusc in the family Pinnidae. The rigid shell has a pair of thick spiny valves held
Atrina_rigida
Archeological site in Wisconsin, US
sherds of pottery made from clay and ground shells. The third layer contained more elaborate pottery, bivalve shells, and a bone tool. Brown and Rice interpreted
Samuels'_Cave
Species of bird
great numbers, to which they are attracted by a certain kind of small bivalve shell fish called vaimeaux ... At the flowing of the tide the scoters approach
Common_scoter
Class of shelled marine molluscs
clade of scaphopods and bivalves based on their shared infaunal lifestyle, burrowing foot, and possession of a mantle and shell. Pojeta and Runnegar proposed
Tusk_shell
Genus of bivalves
Neopycnodonte is a genus of marine bivalve molluscs belonging to the family Gryphaeidae. This genus is very well represented in the fossil record, however
Neopycnodonte
Reconstructed ancestor of the Oceanic languages
scrape; scraper or grater made from circular bivalve shell Asaphis spp. *buliq₁ cowrie shell Cypraea mauritiana *sapulu bivalve mollusc possibly Pinna sp.
Proto-Oceanic_language
Part of the body that forms the supporting structure
structure is used in some invertebrates, for instance in the hinge of bivalve shells or the mesoglea of cnidarians such as jellyfish. Pliant skeletons are
Skeleton
Geological record of biological activity
see Wilson (1986) Sponge borings (Entobia) and encrusters on a modern bivalve shell, North Carolina Entobia from the Prairie Bluff Chalk Formation (Upper
Trace_fossil
Bivalve mollusc
members of several families of bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and
Mussel
Geological formation in New Jersey
have been recovered from this formation. Using radio isotope dating of bivalve shells, the formation has been dated to between 80.5 and 78.5 million years
Woodbury_Formation
to the earlier Greek school. There is also engraved upon this gem a bivalve shell, which also occurs on the coins of Syracuse; whence it may be inferred
Phrygillus
abundant fossils found in some sections of the Del Mar Formation, mostly bivalve shells. It underlies the Stadium Conglomerate of the Poway Group. Paleontology
La_Jolla_Group
Mauritanian National Park
Assemblages formed by benthic foraminifers and molluscs and monospecific bivalve shell accumulations with admixed aeolian silt characterise the platform cover
Banc_d'Arguin_National_Park
Extinct family of molluscs
prehistoric bivalves that lived in the early to middle Permian period. Genera belonging to Alatoconchidae are characterized by their shell that is strongly
Alatoconchidae
Species of gastropod
are dark green in color with a long thin body and a characteristic bivalve shell. They range from 4–6 mm in length, with a dorsal foot roughly as wide
Julia_exquisita
Species of bivalve
Gould's razor shell (Solen strictus) is a bivalve mollusc of the family Solenidae. It is common in Japan in sandy coastal zones of the western, southern
Gould's_razor_shell
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