Patrognathus

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Patrognathus Temporal range: Tournaisian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Agnatha
Class:	†Conodonta
Order:	†Ozarkodinida
Family:	†Cavusgnathidae
Genus:	†Patrognathus Rhodes, Austin & Druce, 1969
Species
†Patrognathus andersoni †Patrognathus crassus †Patrognathus variabilis

Patrognathus is an extinct genus of conodonts.

Use in stratigraphy

The Tournaisian, the oldest age of the Mississippian (also known as Lower Carboniferous) contains eight conodont biozones, four of which contain Patrognathus species:

• the zone of Siphonodella quadruplicata and Patrognathus andersoni (upper zone of Patrognathus andersoni)
• the lower zone of Patrognathus andersoni
• the zone of Patrognathus variabilis
• the zone of Patrognathus crassus

References

External links

• "Patrognathus". The Encyclopedia of Life.
• "Patrognathus". Paleobiology Database. Retrieved 5 July 2016.

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