conodont


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

conodont

a tooth-like fossil, amber in colour. Conodonts occur in sediments from the CAMBRIAN to the TRIASSIC and are thought to be associated with the mouth-parts of primitive chordates such as members of the AGNATHA.
References in periodicals archive ?
Conodonts (Icriodus woschmidti) found in this series indicate the Lochkovian Stage of the Lower Devonian (Zhivkovich & Chekhovich 1985).
The present study has adopted an elaborate field-cum-laboratory study program including bed-by-bed sampling of different faunal groups, taxonomic study of a few selected faunas, Unitary Association methods, diversity analyses, palynology and particulate organic matter analysis as well as diverse paleo environmental proxy data, such as d13C of carbonates and organic matter, and d18O of conodont apatite.
The objectives of our investigation of the conodonts of the Desmoinesian Bucktown Coal Member of the Dugger Formation in the eastern part of the Illinois Basin in Indiana included describing the conodonts, furthering the development of a stable Pennsylvanian conodont taxonomy, interpreting paleonvironments, and continuing the establishment of regional correlations in the Midwest.
Biological biozoning studies were thus based on conodont elements in the studied section's complete rock sequence.
This seminal study will revolutionise both our understanding of the conodont fossil record the role of intrinsic innovation versus extrinsic forces of competition and environmental change, it will also establish an entirely new suite of investigative tools to the discipline.
Conodont biostratigraphy and biofacies of Lower and Middle Devonain Limestones, North-central Ohio.
We have undertaken a study of conodonts in the Viivikonna Formation with several objectives: to discover if this specific facies harboured an environmentally distinctive conodont fauna; to determine if the collections from different lithologies were dominated by different taxa; and to refine the biostratigraphy of the formation, especially through determination of the position of the base of the Amorphognathus tvaerensis Zone.
This new species of conodont is characterized by the presence of a reduced platform.
Paleontologists debated whether this conodont animal was a true vertebrate or an invertebrate chordate similar to amphioxus.
1993): The transition from diagenesis to low-grade metamorphism in the Argentine Precordillera: An application of the conodont colour alteration index.
Through the climatic changes, conodont and ammonoid faunae were initially able to recover very quickly during the Early Triassic as unusually short-lived species emerged.
Miospores in the Campbellton Formation place it in the Emphanisporites annulatus-Camarozonotriletes sextantii Assemblage Zone which corresponds approximately to the Polygnathus dehiscens to Polygnathus serotinus conodont zones of early Emsian to early late Emsian age (Richardson and McGregor 1986).