How To Use Bivalve In A Sentence
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However, early calapids in the Cretaceous were smaller in size and are not considered as major predators of bivalves and gastropods.
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Threadlike cilia-bearing tentacles probe for food, such as forams, detritus, and even the occasional buried bivalve, and bring it to the mouth where a large radula grinds it up.
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However, as early as 1923 Collip reported finding insulin-like activity in a bivalve mollusc, Mya arenaria.
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It appears to be cut from a large bivalve and does not have the twisted shape of a whelk or conch columella.
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A good analog of the decrescent side is the interarea of brachiopods or the hinge area of bivalves.
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The smaller waders will feed on the bivalve molluscs and the little worms and that that are actually in the mud and sand.
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The flowers are variable in color, and produced in loose clusters; the seeds are produced in long, flattened, or cylindrical, bivalved pods, and vary, in
The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use.
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These resemble the foot of some specialized bivalves (Solemya or Lucina) used to penetrate putrid sediment to release H 2 S consumed by symbiotic chemoautotrophic bacteria.
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The fossil content consists of ammonites, belemnites, brachiopods, echinoderms, bivalves, crinoids, gastropods, ostracodes and benthic foraminifers.
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The drill is a common predator of the bivalves here in the reserve.
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She did the slightest double take when she saw you in the bivalved cast but quickly recovered.
Handle with Care
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Here I refer to the soft shell bivalves known as "steamers.
Robert Rosenthal: One Woman's Disgusting Clam Is Another Man's Pleasure To Eat
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Bivalves like oysters, mussels and scallops are particularly prone to contamination because of the way they feed.
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One of these is the bivalves (sometimes called pelecypods or lamellibranchs), an important group of bivalved molluscs familiar to all from the numerous shells that litter beaches.
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As of May 2007, the partners involved agreed that UBC food service would avoid: shrimp products that were not from local trap fisheries, wild bivalve shellfishes and non-native farmed species, snapper or rockfish, tuna caught via long-line fishing, rainbow trout and steelhead reared in net pens or floating cages, swordfish, monkfish, and sevruga caviar.
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The coarse-grained, bivalve-rich floatstone layers intercalated with the ‘background’ slope facies are interpreted as storm deposits.
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Four months after you were put in the spica cast, it was bivalved.
Handle with Care
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Ostracods are small crustaceans enclosed in a bivalved carapace.
Crustacea
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The soybean plant is called a legume because it produces a bivalve pod or fruit.
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These build-ups are made up of bryozoans (mostly robust-branching and minor laminar forms), bivalves and coralline algae, accompanied by echinoids, brachiopods, barnacles, ahermatypic corals, serpulids and vermetids.
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Many suspension-feeding marine bivalve molluscs live in variable environments such as estuaries and shallow coastal waters.
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A bivalve closes its shells by contracting its powerful adductor muscles.
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Few authors have explored body size patterns across the E / O transition, although Hickman did document an increase in the size of chemoautotrophic thyasirid bivalves from the Pacific Northwest.
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The giant bivalves jammed the cracks between the black tufts of lava that covered the ocean floor.
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Four new molluscan species, a bivalve and three gastropods, are named from shallow-marine, lower Upper Cretaceous strata in Oregon.
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As in most bivalves, the shell is composed of three layers: the periostracum, the prismatic layer, and the nacre.
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The new standards adopted will go a long way towards protecting human health, as they set out new, maximum limits for lead in fish, cadmium in rice, marine bivalve molluscs and cephalopods.
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Many bivalves and brachiopods possess multilayered shells.
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Sea urchins, like bivalve molluscs, are cosmopolitan in their distribution and by selecting a range of species a regular supply of gametes can be obtained for laboratory testing purposes.
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Bivalves first appeared during the early Cambrian as part of a shallow infauna.
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Additional studies are required to resolve questions of vitellogenin regulation and the role of estrogens in bivalve molluscs.
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Some oysters and also the bivalve Spondylus were found attached to the dinosaur bones.
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At the northern margin carbonate was produced at the outer platform in bivalve banks and at the platform edge in rhodolith pavements.
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Some of the shells I collected were bittersweets which are also gastropods, but they are considered bivalves like the sunrise tellins, so they have two shells.
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Thus, they are mechanically much weaker than other bivalve shells and are easily fragmented after break-down of the organic matter.
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Like scaphopods, bivalves have a retractile foot which they use to burrow.
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We continue to use these techniques for the isolation of new genes involved in physiological processes in fish and bivalve molluscs.
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A thin (a few decimetres thick) conglomerate, with Miocene carbonate clasts bored by bivalves, and volcanic cobbles, occurs at the base.
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We conclude that potentiation of gill contraction is not a general characteristic of bivalves and that the uneven distribution is not phylogenetically based.
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Bivalves are aquatic suspension-feeders, inhabiting a variety of infaunal and epifaunal habitats and are particularly characterized by their ability to burrow, some of them even into rock and wood.
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These include notations in the business records of these outfits, which make it clear that the tasty bivalves were unusually popular.
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According to both The Oxford English Dictionary and the American Heritage Dictionary, in ancient Greek the bivalve shells you might find at the beach were called ostrakon.
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By contrast, a number of others (including scaphopod and some bivalve mollusks, as well as many annelids) deviate from rotational symmetry to a much greater degree than
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The fossil content consists of ammonites, belemnites, brachiopods, echinoderms, bivalves, crinoids, gastropods, ostracodes and benthic foraminifers.
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This microfossils are accompanied by bivalves and marine gasteropods.
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Thus, all rostroconches and some helcionellacean univalves technically become stem group bivalves.
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Most marine bivalves go through a trochophore stage before turning into a free-swimming veliger larva.
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Some sponges bore into the shells of bivalves, gastropods, and the colonial skeletons of corals by slowly etching away chips of calcareous material.
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Generally fast-growing bivalved molluscs originated in near-shore environments, and later joined slower growing brachiopods offshore.
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For on their dorsal surface they have a shell, and by the under surface they attach themselves to the rocks, and so after a manner become bivalved, the rock representing the second valve.
On the Parts of Animals
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Now explain how a univalve differs from a bivalve, in more ways than just the number of shells.
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It was thought that this behavior was an adaptation for desiccation resistance analogous to the closed shells of bivalves.
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We, besides, found in them at least two species of Pecten, with two species of Terebratula, -- the one smooth, the other sulcated; a bivalve resembling a Donax; another bivalve, evidently a Gervillia, though apparently of a species not yet described; and the ill-preserved rings of large Ammonites, from ten inches to a foot in diameter.
The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland
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Most shells were bivalves, especially clams and some mussels.
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The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
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The majority of bivalves feed by removing particulate organic matter from water that is circulated through the gills by cilliary activity.
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For example, these bivalve shells, probably arks Arcidae, each had a hole thru its umbo.
Indian shell tools from Florida
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But, we would beg to remind all such astute reasoners, of what they seem to be ignorant, namely, that sometimes diamonds are picked up from the dirtiest dung-hills, while the most beautiful of pearls are taken often from the bodies of the ugliest of testacean bivalves.
Social relations in our Southern States,
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Another intimate friend of the kaiser, who possesses much the same talents de societe as Baron Kiderlen-Waechter, and whose position in the high favor of the kaiser has been a subject of much unfavorable comment, and even of open abuse in Berlin, is Baron Holstein, popularly known as the “Austern-Freund” or “Oyster-Friend,” owing to his altogether phenomenal capacity for the absorption of bivalves, and his strongly developed fondness for good cheer!
The Secret Memoirs of the Courts of Europe
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Out to sea lie the treacherous Little and Halliman Skerries, and at low water groups of gregarious shags often congregate on these flat rocks drying their outstretched wings, while eider ducks can be seen dunking for the bivalve mussels.
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The hinge ligament of bivalve shell is an example of a complex development.
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Based on gastropods, bivalves, and planktonic foraminifera, Kilmer assigned this formation to the Turonian.
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The _C. sophera_, L., is characterized by 10 stamens, all fertile and a smooth, linear, bivalved pod full of seeds separated by false partitions.
The Medicinal Plants of the Philippines
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- hingeless and toothless bivalve; freshwater mussel. anoesia, anoia
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The hard parts may be mineralized, as in the shells of bivalves, or composed of organic material, such as the chitin that makes up the exoskeleton of arthropods.
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Spawning takes place between December and March, with eggs being laid in rock cavities or empty bivalve shells in shallow water or even on the shore.
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Many modern gastropods and bivalves respond to increased temperature by increasing both shell and soft tissue growth rates.
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Many bivalves (such as clams or oysters) are used as food in places all over the world.
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The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
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The hinge ligament of bivalve shell is an example of a complex development.
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The soft parts of bivalves are divided into five groups: mantle or pallium, gills, foot and byssus, muscles, and visceral mass.
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Meanwhile, Pelseneer had come up with a classification of bivalves based on the structure of the ctenidia.
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A thin (a few decimetres thick) conglomerate, with Miocene carbonate clasts bored by bivalves, and volcanic cobbles, occurs at the base.
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The giant bivalves jammed the cracks between the black tufts of lava that covered the ocean floor.
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Notable is the relative rarity of bivalves and gastropods, consistent with a deeper water environment.
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The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
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Their bodies are completely enclosed in a calcified, bivalved carapace which is hinged dorsally.
Crustacea
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Notable is the relative rarity of bivalves and gastropods, consistent with a deeper water environment.
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As we sailed along the rock, we observed that it is covered with echini, polypii, barnacles, limpets, and crusted with white bivalves less than oysters or cockles, yet containing a fish not unlike the latter in appearance, and the former in flavour.
Journal of a Voyage to Brazil And Residence There During Part of the Years 1821, 1822, 1823
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We find lacustrine marls on the sides of the Esquiline Hill where it slopes down into the Forum, and fresh-water bivalve and univalve shells in the ground under the equestrian statue of Marcus Aurelius on the Capitol; while on the face of the Aventine Hill, overhanging the Tiber at a height of ninety feet, is a cliff of travertine, which is half a mile long.
Roman Mosaics Or, Studies in Rome and Its Neighbourhood
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Of the rest, some are bivalved and some univalved; and by ‘bivalves’ I mean such as are enclosed within two shells, and by
The History of Animals
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The invasion was not limited to brachiopods but also included bryozoans, cephalopods, corals, bivalves, gastropods, trilobites, and crinoids.
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Marine invertebrates include ammonites, echinoderms, bivalves and crustaceans, but infaunal elements are rare.
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As is true of most bivalves bearing the name cockle, it looks something like a human heart when viewed from the side.
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When bivalves diversified in the Middle to Upper Ordovician, both classes occupied a full range of environments, from nearshore to basinal.
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Other marine trace fossils, together with marine bivalves, have been described from the unit as a whole.
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Most bivalve fossils are a few centimetres long; the ideal size for collecting.
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Despite their unusual features, it is generally believed that the closest relatives of scaphopods are the bivalves.
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Subtidal lithologies contain peloids, ostracodes, bivalves, gastropods and oncoids (with less common benthic foraminifera and calcareous algae).
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The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
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This mecon in the turbinated genera is lodged in the spiral part of the shell, while in univalves, such as limpets, it occupies the fundus, and in bivalves is placed near the hinge, the so-called ovum lying on the right; while on the opposite side is the vent.
On the Parts of Animals
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The hill consisted of a red ferruguinous sandstone, in parts of which were imbedded univalve and bivalve shells, pieces of water-worn or burnt wood, and what seemed fragments of bone.
Journal of an Expedition into the Interior of Tropical Australia
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And Janira maculosa), snails (Alvania sp.) and barnacles (Tonicella sp.), are observed together with infaunal polychaetes, nematodes, bivalves (
Featured Articles - Encyclopedia of Earth
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Many bivalves (such as clams or oysters) are used as food in places all over the world.
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Their bodies are completely enclosed in a calcified, bivalved carapace which is hinged dorsally.
Crustacea
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Included here are the gastropods, bivalves, cephalopods, and other lesser groups, as follows.
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Shell fragments of bivalves and gastropods are common in Neogene shallow-water deposits.
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Bivalves are aquatic suspension-feeders, inhabiting a variety of infaunal and epifaunal habitats and are particularly characterized by their ability to burrow, some of them even into rock and wood.
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A common fossil in the basal impure limestone beds is a bivalve that Silberling referred to as ‘an unidentified concavo-convex radially ribbed oysterlike pelecypod.’
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Both species of crayfish readily ate native bivalves.
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This marine worm, first described in 1949 as an acoel flatworm and later claimed as either an early metazoan offshoot or a primitive deuterostome, has recently been affiliated with primitive bivalve molluscs, based upon a study of gamete development oogenesis and an analysis of sequence data from both 18S rRNA and mitochondrial genes.
Strange worm, Xenoturbella - The Panda's Thumb
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The carapace of cladocerans covers the throrax/abdomen but not the head, and is folded down the midline giving them a bivalved appearance.
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As regards Testacea, he writes, "The nature of their internal structure is similar in all, especially in the turbinated animals, for they differ in size and in the relations of excess; the univalves and bivalves do not exhibit many differences" (Cresswell, _loc.cit. _, p. 83).
Form and Function A Contribution to the History of Animal Morphology
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This mecon in the turbinated genera is lodged in the spiral part of the shell, while in univalves, such as limpets, it occupies the fundus, and in bivalves is placed near the hinge, the so-called ovum lying on the right; while on the opposite side is the vent.
On the Parts of Animals
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Other molluscs are present but less common, including bivalves, scaphopods, orthoconic cephalopods, tentaculitids, and small, indeterminate juvenile ammonoids.
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Over the past ten years, cladistics and molecular systematics have begun to be applied to solve problems of bivalve evolutionary biology.
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The glochidia larvae of some freshwater mussels can be serious parasites of fish, and some marine bivalves bore through wood, causing damage to wooden ships, pilings, and other wood structures.
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Bradoriids are small bivalved arthropods, historically considered to be the oldest members of the Ostracoda.
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Hallam plotted the number of European Jurassic bivalve species against their estimated stratigraphic range without distinguishing between endemics and cosmopolitans.
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- hingeless and toothless bivalve; freshwater mussel. anoesia, anoia
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There is a large class of plants which have their seeds enclosed in a sort of bivalve pericarp, usually called a "pod."
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This pattern was documented for both bivalves and gastropods and continued from the mid to late Paleocene until the early Eocene.
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They include bivalves, brachiopods, bryozoans, crinoids, gastropods, a possible monoplacophoran, nautiloids and a possible serpulid or microconchid.
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The scarce fossil record consists of bivalve and gastropod debris.
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Mussels, like other bivalves, obtain all their nutrients - including iron - by filtering them from the water.
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Slope sediments consist of a medium-grained, bioclastic floatstone to rudstone with abundant bryozoans, bivalves and branching coralline algae.
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Sea urchins, like bivalve molluscs, are cosmopolitan in their distribution.
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Doubly uniparental inheritance (DUI) is a common mode of mitochondrial DNA transmission in bivalves.
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A heart-shaped bivalve or a garden flower. colporteur
2009 January | NIGEL BEALE NOTA BENE BOOKS
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They are characterized by a single, pseudobivalved shell which enclosed the mantle and muscular foot.
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As expected, both gastropods and bivalves show remarkably similar Ordovician diversity trajectories on a global scale, thus lending support to the synoptic model of global evolutionary faunas.
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Corals, conodonts, bivalves, brachiopods and cephalopods have comparable intracratonic distribution patterns.
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This makes brachiopods look superficially like bivalved molluscs (clams, oysters, etc.)
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Bivalves extensively colonized the outer platform, and rhodolith pavements covered its edge.
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A bivalve is characterized by possessing two shells secreted by a mantle that extends in a sheet on either side of the body.
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But this is by no means all, -- not only is there this external resemblance between the thoracic armour of the crustacean and the bivalve shell, but the two sides of the ostracod and phyllopod thorax are connected together also by an adductor muscle!
On the Genesis of Species
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Fossil wood with _Teredo antenautæ_ is also met with, and pyritous casts of univalve and bivalve shells.
Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology
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Among Mollusks, the lower Bivalves, that is, the Brachiopods and Bryozoa, still prevailed, while Ammonites continued to be very numerous, differing from the earlier ones chiefly in the ever-increasing complications of their inner partitions, which become so deeply involuted and cut upon their margins, before the type disappears, as to make an intricate tracery of very various patterns on the surface of these shells.
The Atlantic Monthly, Volume 12, No. 70, August, 1863
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For example, these bivalve shells, probably arks (Arcidae), each had a hole thru its umbo.
Archive 2009-04-01
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This type of ornamentation is often found in crustaceans including Daphnia, many species of ostracodes, and other Cambrian bivalved arthropods such as Isoxys.
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The intermediate-level benthos was dominated by sponges, corals, giant bivalves, giant brachiopods, stalked echinoderms and fixed dendroid graptolites.
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The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.
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The exceptionally early extinction patterns of the inoceramid bivalves and belemnites can be confirmed, but it is apparent that other key groups such as the ammonites and trigoniid bivalves go right up to the boundary itself.
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Bivalves like oysters, mussels and scallops are particularly prone to contamination because of the way they feed.
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Finally, there was disagreement over how many major subdivisions were recognized within the bivalves.
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This clay from the Amazon, as examined microscopically by Prof.H. James Clark, contains fragments of gasteropod shells and bivalve casts.
The Andes and the Amazon Across the Continent of South America
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Well-rounded clasts include lava, volcaniclastic sandstones and bioclastic limestones with nummulites, bryozoa, microbial carbonate and bivalve material.
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They suggested that this species is similar in microstructure to modern unionid bivalves, which are externally prismatic and internally nacreous.
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The coarser fraction of chalk consists mainly of the skeletal debris of foraminifera, calcispheres, bivalve fragments, echinoid plates, and bryozoan, ostracod, and coral debris.
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The organisms that most significantly contribute to the production of temperate carbonate grains, such as bryozoans, coralline algae and epifaunal bivalves, cannot successfully thrive on mobile substrate.
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But who speaks out for the univalve and the bivalve?
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Freshwater bivalves, snails, and branchiopod Crustacea were common.
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These and other studies from native habitats have demonstrated that green crabs have a broad diet range, but that bivalve molluscs generally make up the largest part of their diet.
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Despite their antiquity, living terebratulids are advanced organisms, able to out-perform molluscan bivalves in filter feeding efficiency under certain conditions.
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* The Pittosporum angustifolium we also recognised here, loaded with its singular orange-coloured bivalved fruit.
Three Expeditions into the Interior of Eastern Australia, Volume 2
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The soil is very dry, and the beach composed exclusively of small "pipi" shells ” small bivalves.
Life of John Coleridge Patteson
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Well-known bivalves to which the name gaper could be applied are the razor clam, and the soft-shelled clam; but the latter is something of an exception in that it can survive for some time without water (indeed without oxygen).
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Most bivalves lead a fairly stationary life, either anchored to rocks, like mussels, or buried in sediment, like razor-shells, cockles and clams.
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In many bivalve shells, growth lines become closely spaced in the late growth stage, accompanied by prominent shell inflation and thickening of the shell.
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Bivalves are characterized by a pair of calcareous shells, or valves, held together with an elastic hinge ligament.
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Large, relatively well-preserved bivalve shells, rhodoliths and nodular bryozoans (several centimetres in size) occur together with volcanic pebbles, at the front of the landward-dipping beds.
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Freshwater bivalves, snails, and branchiopod Crustacea were common.
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There is no evidence for trans-Panthalassan dispersal of bivalves in low latitudes within the interval of Ladinian coral beds.
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The bean seed grows in a bivalve pod called a legume.
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In bivalve molluscs, growth rate of the shell tends to decelerate with growth and the shell generally becomes more inflated in the late growth stage.
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One of these is the bivalves (sometimes called pelecypods or lamellibranchs), an important group of bivalved molluscs familiar to all from the numerous shells that litter beaches.
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Corals, conodonts, bivalves, brachiopods and cephalopods have comparable intracratonic distribution patterns.
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They are large bivalves with thick shells, which bear numerous and finely spaced concentric lines but no radial ones.
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Other species take refuge in a protective structure surrounding their body, such as polychaete tubeworms, caddis fly larvae, gastropod and bivalve mollusks, hermit crabs, barnacles, turtles, and armadillos.
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Of this the capsule, about an inch in length, is covered with soft prickles or hair, opens like a bivalve shell, and contains in its cavities a dozen or more seeds, the size of grape-stones, thickly covered with a reddish farina, which is the part that constitutes the dye.
The History of Sumatra Containing An Account Of The Government, Laws, Customs And Manners Of The Native Inhabitants
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The seed, reniform in shape, is bivalved, and constitutes about two-thirds of the bulk of the entire plum, and the inner kernel two-thirds the bulk of the seed.
Scientific American Supplement, No. 365, December 30, 1882
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The only bivalve group having comparable hinge features is the Philobryidae (Arcoida, Limopsoidea).
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Like scaphopods, bivalves have a retractile foot which they use to burrow.
