Neognathodus
Appearance
Neognathodus Temporal range:
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Genus: | †Neognathodus |
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Neognathodus is an extinct genus of conodonts.
Use in stratigraphy
[edit]The Bashkirian, the oldest age of the Pennsylvanian (also known as Upper Carboniferous), contains six biozones based on conodont index fossils, two of which contain Neognathodus species:
- the zone of Neognathodus atokaensis
- the zone of Neognathodus askynensis
The base of the Moscovian, the second stage in the Pennsylvanian, can biostratigraphically be divided into five conodont biozones, three of which contain Neognathodus species:
- the zone of Neognathodus roundyi and Streptognathodus cancellosus
- the zone of Neognathodus medexultimus and Streptognathodus concinnus
- the zone of Neognathodus uralicus
References
[edit]- Taxonomy, Phylogeny, and Biostratigraphy of Neognathodus in Appalachian Pennsylvanian Rocks. Glen K. Merrill, Journal of Paleontology, Vol. 46, No. 6 (Nov., 1972), pages 817-829 (Stable URL)
- Apparatus of the Pennsylvanian Conodont genus Neognathodus. Glen K Merrill and Peter H Von Bitter, Royal Ontario Museum, 1977, pages 11–13
- Neognathodus and the species concept in conodont paleontology. Glen K Merrill, Bollettino della Societa Paleontologica Italiana, January 1998, volume 37, issue 2, pages 465-473
External links
[edit]- "Neognathodus" at the Encyclopedia of Life
- "Neognathodus". Paleobiology Database. Retrieved 8 July 2016.