bony shield

костный покров

English-Russian dictionary of geology. 2011.

Смотреть что такое "bony shield" в других словарях:

  • trunk shield — a series of overlapping bony plates forming a ring around the trunk of Placoderms, just behind the head and articulating with the head shield in most species …   Dictionary of ichthyology

  • agnathan — /ag neuh theuhn/, n. 1. any member of the vertebrate class Agnatha. adj. 2. agnathous. [AGNATH(A) + AN] * * * ▪ fish Introduction   any member of the group of primitive, jawless fishes (fish) that includes the lampreys (lamprey) (order… …   Universalium

  • ostariophysan — ▪ fish Introduction  any of about8,000 species of bony fishes (bony fish) belonging to a group that includes the majority of freshwater fishes throughout the world. Familiar representatives of this group are the minnows (minnow), suckers (sucker) …   Universalium

  • Ichthyology terms — Ichthyology uses several terms that are unique to the science.Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z NOTOC A * Abdomen: belly * Abdominal: pertaining to the belly * Actinosts: a series of bones at the base of the pectoral… …   Wikipedia

  • The Mockery Bird — is a humorous novel by Gerald Durrell, published in 1981 by William Collins Sons and Co. Ltd. The book, like the other works of the author, contains a strong environmental message.Plot summaryThe story takes place on a (fictitious) tropical… …   Wikipedia

  • buckler — 1) bony shield, scute, modified scales associated with unpaired fins with a presumed hydrodynamic function 2) a circular piece of wood used with a lever to press dried and salted fish into barrels or casks …   Dictionary of ichthyology

  • carapace — a bony shield covering the back generally, but also used for the plates encasing the whole body in boxfishes (Ostraciidae) …   Dictionary of ichthyology

  • Birkenia — ▪ paleontology       genus of extinct early fishlike vertebrates found in Late Silurian and Early Devonian rocks in Europe (from about 421 to 387 million years ago). Birkenia was a primitive jawless vertebrate that attained a length of only about …   Universalium

  • Pteraspis — ▪ paleontology       genus of extinct jawless fishlike vertebrates found as fossils in Early Devonian rocks (those 398 million to 416 million years old) in North America and Europe. Pteraspis was approximately 16 cm (6.5 inches) in length and had …   Universalium

  • horned toad — noun insectivorous lizard with hornlike spines on the head and spiny scales on the body; of western North America • Syn: ↑horned lizard, ↑horny frog • Hypernyms: ↑iguanid, ↑iguanid lizard • Hyponyms: ↑Texas horned lizard, ↑ …   Useful english dictionary

  • fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …   Universalium

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