Patrognathus

Patrognathus; Temporal range:
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

British Avonian (Carboniferous) conodont faunas, and their value in local and intercontinental correlation. FHT Rhodes, RL Austin, EC Druce, 1969, British Museum (Natural History)

External links

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

[1] British Avonian (Carboniferous) conodont faunas, and their value in local and intercontinental correlation. FHT Rhodes, RL Austin, EC Druce, 1969, British Museum (Natural History)

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