univalve การใช้

• Rostroconchs began their life as a small, bilaterally symmetrical, univalved protoconch planktonic larva.
• For example, mud flats are inhabited by many univalves which are detritus feeders, such as moon shells.
• This species is the largest gastropod in the American waters, and one of the largest univalves in the world.
• The great majority of shelled gastropods or snails have a shell in one part, hence the older name " univalve ".
• -Bailey-Matthews Shell Museum, mollusks and man, bivalves and univalves, open Tuesday through Sunday; ( 941 ) 395-2233.
• In conjunction with the univalve shell, this has been taken to indicate " Kimberella " was a mollusc or very closely related to molluscs.
• The UniValve and BiValve-30 amplifiers have Hot Plates built into them; the Flexi-50 has a foot-switchable master volume control in lieu of a Hot Plate.
• Other invertebrate fossils common in Tarrant County include : clams, oysters, scallops and other kinds of bivalve mollusks; snails and other univalve mollusks; lamp shells, kingenas and other brachiopods.
• If you know the division between bivalves and univalves, the shells you find at the beach have an instant home-a kind of mailbox in your brain-where they belong and fit comfortably.
• Bouchet & Rocroi ( 2005 ) points out ( page 271 ) that assignment of " " symmetrical univalved mollusks " bellerophonts " either to Gastropoda or to Monoplacophora or Tergomya is controversial . ""
• Bouchet & Rocroi, on page 271 ( 2005 ), also state that the assignation of " " symmetrical univalved mollusks " bellerophonts " either to Gastropoda or to Monoplacophora or Tergomya is controversial . ""
• The earlier name " univalve " means " one valve " or shell, in contrast to " bivalve " applied to mollusks such as clams and meaning that those animals possess two valves or shells.
• A number of terms are used to describe molluscan shell shape; in the univalved molluscs, endogastric shells coil backwards ( away from the head ), whereas exogastric shells coil forwards; the equivalent terms in bivalved molluscs are opisthogyrate and prosogyrate respectively.
• At first this dung is a poor source of nutrition, and so univalves pay no attention to it, but after several days, micro-organisms begin to multiply on it again, its nutritional balance improves, and so they eat it again.
• In 1840 he began the publication of his monograph on the  Fresh-Water Univalve Mollusca of the United States,  in which he described the " Scolithus linearis ", a new genus and species of fossil plant, the most ancient organic remains in Pennsylvania.
• Gastropoda ( previously known as "'univalves "'and sometimes spelled " Gasteropoda " ) are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 60, 000 to 80, 000 living snail and slug species.