Patrognathus

Patrognathus Temporal range: Tournaisian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
(unranked):	†Prioniodontida
Order:	†Ozarkodinida
Superfamily:	†Polygnathacea
Family:	†Cavusgnathidae
Genus:	†Patrognathus Rhodes, Austin & Druce, 1969[1]
Species
†Patrognathus andersoni †Patrognathus crassus †Patrognathus variabilis

Patrognathus is an extinct genus of conodonts.

Use in stratigraphy

The Tournaisian, the oldest age of the Mississipian (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

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)

External links

• Patrognathus at the Encyclopedia of Life
• Patrognathus at fossilworks.org (retrieved 5 July 2016)