英语词汇“conodont”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

conodont

/ˈkəʊnədɒnt

noun

1 (also conodont animal) A fossil marine animal of the Cambrian to Triassic periods, having a long worm-like body, numerous small teeth, and a pair of eyes. It is now believed to be the earliest vertebrate.

Class Conodonta, phylum Chordata: numerous families.

Life table analyses were then made for the two populations assuming that the height of the cusp reflects the age of the conodont animal and that the samples represent normal mortality rates....

The presence of hydroxyproline in all samples of pearls tested suggests but does not prove that these unusual elements may actually have been secreted within a biological organism like the conodont animal.
The Ordovician is best known for the presence of its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates).

1.1 (also conodont element) A tooth of the conodont, often found as a fossil.A second important application is the use of a colour alteration index that recognizes the degree of heating at depth in the Earth's crust by means of the colour change shown by a conodont element....

The conodont element on the left side is obvious if you are looking for it.
However all conodont elements grew by accretion on their margins or external surfaces, whereas Eurytholia sclerites show only a limited degree of accretion on their internal surfaces.

Origin

Mid 19th century: from modern Latin Conodonta (plural), from Greek kōnos 'cone' + odous, odont- 'tooth'.

单词	conodont
释义	conodont /ˈkəʊnədɒnt / noun 1 (also conodont animal) A fossil marine animal of the Cambrian to Triassic periods, having a long worm-like body, numerous small teeth, and a pair of eyes. It is now believed to be the earliest vertebrate. Class Conodonta, phylum Chordata: numerous families. Life table analyses were then made for the two populations assuming that the height of the cusp reflects the age of the conodont animal and that the samples represent normal mortality rates.... The presence of hydroxyproline in all samples of pearls tested suggests but does not prove that these unusual elements may actually have been secreted within a biological organism like the conodont animal. The Ordovician is best known for the presence of its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates). 1.1 (also conodont element) A tooth of the conodont, often found as a fossil.A second important application is the use of a colour alteration index that recognizes the degree of heating at depth in the Earth's crust by means of the colour change shown by a conodont element.... The conodont element on the left side is obvious if you are looking for it. However all conodont elements grew by accretion on their margins or external surfaces, whereas Eurytholia sclerites show only a limited degree of accretion on their internal surfaces. Origin Mid 19th century: from modern Latin Conodonta (plural), from Greek kōnos 'cone' + odous, odont- 'tooth'.
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