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单词 crinoid
释义

Definition of crinoid in English:

crinoid

noun ˈkrʌɪnɔɪdˈkrɪnɔɪdˈkraɪˌnɔɪd
Zoology
  • An echinoderm of the class Crinoidea, which comprises the sea lilies and feather stars.

    Example sentencesExamples
    • Gogia is an eocrinoid, a member of a grouping of early echinoderms that probably included the ancestors of true crinoids and other echinoderm taxa.
    • Echinoid and crinoid fragments are preserved on a number of bedding planes, indicating normal salinity levels.
    • A very productive synergism developed among crinoid biologists, crinoid paleontologists, and those who worked in both fields.
    • Commonly, the host is a brachiopod, but it may be a coral, bryozoan colony, crinoid stem, or mollusk.
    • The entire fauna is typically shallow-marine, composed of crinoids, brachiopods, corals, and bryozoans.
adjective ˈkrʌɪnɔɪdˈkrɪnɔɪdˈkraɪˌnɔɪd
Zoology
  • Relating to or denoting crinoids.

    Example sentencesExamples
    • The fauna is dominated by common fenestrate bryozoans and crinoid ossicles.
    • The Graphic mine in the same district is known for smithsonite replacements after crinoid stems and mollusk shells.
    • Grainy rocks in the upper third contain an abundance of disarticulated crinoid debris.
    • Most of the sphinctozoans and crinoid stems are found almost complete and articulated, lying parallel to bedding.
    • Alpha taxonomy must still play a vital role in the crinoid research agenda.

Derivatives

  • crinoidal

  • adjectivekrʌɪˈnɔɪd(ə)lkrɪˈnɔɪd(ə)lˈkraɪˌnɔɪdl
    Zoology
    • Recent fieldwork strongly indicates that these crinoidal deposits should be considered a discrete unit.
      Example sentencesExamples
      • The echinoderms appear to be particularly abundant in an interval up to 0.5 m below a 25-30 cm ledge-forming crinoidal grainstone with small micritic bioherms.
      • The Haight Creek is primarily composed of dolomitic mudstones and wackestones with abundant chert interbeds and thin, discontinuous crinoidal packstones.
      • Understanding this faunal record is quite important, because crinoidal facies were a dominant lithofacies along the western margin of North America during the Lower Mississippian.
      • Lithologically, the most abundant carbonate rock type is an argillaceous, coarse-grained crinoidal packstone, but finer grained packstones, grainstones, calcareous siltstones, and shales are also present.

Rhymes

echinoid
 
 

Definition of crinoid in US English:

crinoid

nounˈkrīˌnoidˈkraɪˌnɔɪd
Zoology
  • An echinoderm of the class Crinoidea, which comprises the sea lilies and feather stars.

    Example sentencesExamples
    • Commonly, the host is a brachiopod, but it may be a coral, bryozoan colony, crinoid stem, or mollusk.
    • Echinoid and crinoid fragments are preserved on a number of bedding planes, indicating normal salinity levels.
    • The entire fauna is typically shallow-marine, composed of crinoids, brachiopods, corals, and bryozoans.
    • Gogia is an eocrinoid, a member of a grouping of early echinoderms that probably included the ancestors of true crinoids and other echinoderm taxa.
    • A very productive synergism developed among crinoid biologists, crinoid paleontologists, and those who worked in both fields.
adjectiveˈkrīˌnoidˈkraɪˌnɔɪd
Zoology
  • Relating to or denoting crinoids.

    Example sentencesExamples
    • Most of the sphinctozoans and crinoid stems are found almost complete and articulated, lying parallel to bedding.
    • Alpha taxonomy must still play a vital role in the crinoid research agenda.
    • The fauna is dominated by common fenestrate bryozoans and crinoid ossicles.
    • The Graphic mine in the same district is known for smithsonite replacements after crinoid stems and mollusk shells.
    • Grainy rocks in the upper third contain an abundance of disarticulated crinoid debris.
 
 
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更新时间:2024/9/20 23:20:14