Conodonts (Greek kōnos, "cone", + odont, "tooth") are an extinct group of jawless vertebrates, classified in the class Conodonta. They are primarily known from their hard, mineralised tooth-like structures called "conodont elements" that in life were …

conodont, minute toothlike fossil composed of the mineral apatite (calcium phosphate); conodonts are among the most frequently occurring fossils in marine sedimentary rocks of Paleozoic age.

Conodonts are a group of extinct microfossils known from the Late Cambrian (approximately 500 million years ago) to the Late Triassic (about 200 million years ago). They are the only known hard parts of an extinct group of animals believed to be distantly related to the living hagfish.

Conodont are microscopic jaw parts composed of apatite from an extinct group of early chordates that existed from Cambrian to Triassic times. Epstein et al. (1977) observed that conodonts undergo systematic color changes that are related to thermal maturity in both natural samples and laboratory-heated sediments.

2024年5月21日 · Conodonts are a group of extinct vertebrates that resemble eels. They swam the oceans of the world between the late Cambrian and late Triassic period (about 500 to 200 million years ago). Only about a dozen body fossils of conodonts have been uncovered —they are mostly known for fossils of their unusual feeding apparatus, called conodont elements.

Conodont elements are phosphatic tooth-like structures whose affinity and function is now believed to be part of the feeding apparatus of an extinct early vertebrate. Early ideas concluded that the conodontophorid was a soft bodied, bilaterally symmetrical nektonic organism, although there is still much debate concerning possible benthic ...

2023年1月5日 · Conodonts were tiny fish-like animals that were very abundant in the shallow seas of the Paleozoic Era. The animals were about 1/4 inch in length and had no hard parts except for their teeth. Conodont teeth are very common fossils in the Ordovician, Silurian, Devonian, Mississippian, and Pennsylvanian rocks in Kentucky.

2001年11月1日 · Conodonts were mostly small, elongate, eel-shaped marine animals that inhabited a variety of environments in Paleozoic and Triassic seas.

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.

Conodonts, the most important and widespread, though enigmatic, Paleozoic micro-fossils, were first described by C. H. Pander in 1856. They range from Lower Cambrian to Upper Triassic and have a size between 0.2 and ≈6 mm.