Polygnathus

conodont

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July 1, 2026

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Polygnathus is a genus of conodonts, which are small, tooth-like fossils found in ancient marine rocks. These fossils are important because Polygnathus is a key conodont genus from which many other distinct conodont genera evolved. These evolved forms are significant as index, or guide, fossils, helping paleontologists date rock layers. Conodonts, in general, are valuable for global biostratigraphy, particularly in rocks from the uppermost Cambrian to the uppermost Triassic periods.12

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polygnathiform
…be derived from the genus Polygnathus, a genus found in rocks of Early Devonian to Early Carboniferous age (the Devonian Period lasted from 408 to 360 million years ago and was followed by the Carboniferous Period). Polygnathus is clearly a key conodont genus; from this form a wide variety of…
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…be derived from the genus Polygnathus, a genus found in rocks of Early Devonian to Early Carboniferous age (the Devonian Period lasted from 408 to 360 million years ago and was followed by the Carboniferous Period). Polygnathus is clearly a key conodont genus; from this form a wide variety of…
Read More