Patrognathus

Patrognathus
Temporal range: Tournaisian
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 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
gollark: Why? They're all garbage-collected, abstract over raw OS-level stuff, have large runtimes, etc.
gollark: Python is higher-level than JS and Java and such? Really?
gollark: If you actually get the concepts then you can probably pick up a different language fine.
gollark: The syntax isn't very important, the semantics are what matter, and Python is basically your standard modern high-level multiparadigm language so the concepts transfer fine to JS and whatever else.
gollark: Don't start with C++, it has similar problems plus masses of complexity stacked on.

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)


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.