Gnathodus
| Gnathodus Temporal range: Early Carboniferous |
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| Conodont elements from the Deer Valley Member of the Mauch Chunk Formation detail
Figures 3–9. Conodonts from the uppermost Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. This collection (93RS–79b) is from the upper 10 cm of the Loyalhanna Member. Note the highly abraded and reworked aeolian forms. 9. Gnathodus texanus?, Pa element, upper view, X140.
Figures 10–14. Conodonts from the basal 20 cm of the Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. (93RS–79a), and Westernport, Md. (93RS–67). Note the highly abraded and reworked aeolian forms. 12. Gnathodus sp., Pa element, upper view, reworked Late Devonian(?) through Mississippian morphotype, 93RS–67, X140. |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Conodonta |
| Order: | †Ozarkodinida |
| Family: | †Idiognathodontidae |
| Genus: |
†Gnathodus Pander, 1856 |
| Species | |
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Gnathodus is an extinct conodont genus in the family Idiognathodontidae.
The Tournaisian, the oldest age of the Mississippian (also known as Lower Carboniferous), contains eight conodont biozones, 3 of which are defined by Gnathodus species:
The Visean, the second age of the Mississippian, contains four conodont biozones, two of which are defined by Gnathodus species:
The Serpukhovian, the third or youngest age of the Mississippian, includes four conodont biozones, two of which are defined by Gnathodus species:
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