denticle

/den"ti keuhl/, n.
a small tooth or toothlike part.
[1350-1400; ME < L denticulus, equiv. to denti- DENTI- + -culus -CLE1]

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fossil
      part of a conodont, a small toothlike fossil found in marine rocks representative of a long span of geologic time. Although they resemble cusps, denticles are generally smaller than distinct cusps and vary greatly in shape and structure. Denticles may be spaced closely to each other or separated by gaps of varying size; they may be distinctly formed or partially fused to each other. In shape, denticles may be needlelike, spiny, or saw-toothed. In some conodonts, denticles are completely absent, and the major part of the conodont consists of a single cusp. The form, number, and arrangement of denticles are frequently distinctive and characteristic of particular kinds of conodonts. In some forms, denticles are present as single straight, or almost straight, rows. In others, the denticles may be curved or even split into several branches. The earlier conodont forms that possess denticles generally consist of a main bar that supports the denticle row and the main cusp. In later forms, the main cusp and denticle row are flanked by a platform on either side.

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Universalium. 2010.

Look at other dictionaries:

  • Denticle — Den ti*cle, n. [L. denticulus a little tooth, dim. of dens, dentis, tooth. See {Dental}, and cf. {Dentelli}.] A small tooth or projecting point …   The Collaborative International Dictionary of English

  • denticle — [den′ti kəl] n. [L denticulus, dim. of dens, TOOTH] a small tooth or toothlike projection …   English World dictionary

  • denticle — a small tooth like body; also used for the placoid scale of Elasmobranchii. Also called dermal denticle …   Dictionary of ichthyology

  • Denticle — A denticle is a small tooth like structure. It may refer to: Dermal denticles or placoid scales, in cartilaginous fishes Pulp stone or endolith, a calcified mass in the center of a tooth Small structures on the surface of an insect This… …   Wikipedia

  • denticle — noun Etymology: Middle English, from Latin denticulus, diminutive of dent , dens Date: 14th century a conical pointed projection (as a small tooth) …   New Collegiate Dictionary

  • denticle — noun a) A small tooth b) A pulp stone See Also: denticular …   Wiktionary

  • denticle — 1. SYN: endolith. 2. A toothlike projection from a hard surface. [L. denticulus, a small tooth] * * * den·ti·cle dent i kəl n PULP STONE * * * den·ti·cle (denґtĭ kəl) [L. denticulus a little tooth] 1. a small toothlike process. 2. a… …   Medical dictionary

  • denticle — (Order Isopoda): A small tooth [Kensley and Schotte, 1989]. (Subclass Copepoda): A solid extension of the epicuticle of a segment (see seta and setule) [Ferrari and Dahms, in press] …   Crustacea glossary

  • denticle — Synonyms and related words: baby tooth, bicuspid, bucktooth, canine, crown, cuspid, cutter, deciduous tooth, dent, denticulation, dentil, dentition, dogtooth, eyetooth, fang, fore tooth, gagtooth, gang tooth, gold tooth, grinder, incisor, milk… …   Moby Thesaurus

  • denticle — den|ti|cle Mot Pla Nom masculí …   Diccionari Català-Català

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