One of the mysteries of the English language finally explained.
1A fossil marine animal of the Cambrian to Triassic periods, having a long wormlike body, numerous small teeth, and a pair of eyes. It is now believed to be the earliest vertebrate.
Class Conodonta, phylum Chordata: numerous families
- ‘The Ordovician is best known for the presence of its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates).’
- ‘Interestingly, the authors state that the earliest (Pre-Cambrian to Early Cambrian) conodonts, known as the Protoconodonta, are probably unrelated.’
- ‘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.’
- ‘Other than the ‘eyes’ of the Crawling Eye model, the conodont is revealed to be a very ordinary sort of vertebrate.’
- ‘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.’
- 1.1 A tooth of the conodont, often found as a fossil.
- ‘The conodont samples had been collected for various purposes and underwent different treatment in the laboratory, and consequently the conodont elements retrieved vary in minimum size.’
- ‘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.’
- ‘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.’
- ‘At one time or another, most of these have been regarded as conodont elements.’
- ‘The conodont element on the left side is obvious if you are looking for it.’
Mid 19th century: from modern Latin Conodonta (plural), from Greek kōnos ‘cone’ + odous, odont- ‘tooth’.
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