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conodont

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conodont

Minute toothlike fossil composed of the mineral apatite (calcium phosphate); conodonts are among the most frequently encountered fossils in marine sedimentary rocks of Paleozoic age. They are the remains of animals that lived 543–248 million years ago that are believed to have been small marine invertebrates living in the open oceans and coastal waters throughout the tropical and temperate zones.

conodont [′kän·ə‚dänt]
(paleontology)
A minute, toothlike microfossil, composed of translucent amber-brown, fibrous or lamellar calcium phosphate; taxonomic identity is controversial.
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deal, respectively, with conodont paleontology and with lead-isotope geochemistry.
Paleozoic Evolution and Metallogeny of Pericratonic Terranes at the ... by Waldron, John W.F. / Geoscience Canada
In recent years he has discovered hundreds of complete conodont mouth apparatuses in 425-million-year-old lagoons on the Bruce Peninsula.
40 Influential research projects by ROM Magazine
Middle Ordovician-Upper Ordovician boundary in Estonia Precise time-correlation in the Ordovician can be achieved by biostratigraphical methods, particularly using graptolite, conodont and chitinozoan distribution (biozones).
Age of Estonian kukersite oil shale--middle or late Ordovician? by Hints, O.; Nolvak, J.; Viira, V. / Oil Shale
 
 
 
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