Pterospathodus

Pterospathodus is an extinct genus of conodont from the Silurian period.

Pterospathodus
Temporal range: Telychian–Sheinwoodian
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Family:
Genus:
Pterospathodus

Walliser 1964[1]
Species and subspecies
  • Pterospathodus celloni
  • Pterospathodus eopennatus
    • P. eopennatus ssp. n. 1
    • P. eopennatus ssp. n. 2
  • Pterospathodus amorphognathoides
    • P. amorphognathoides angulatus
    • P. amorphognathoides lennarti
    • P. amorphognathoides lithuanicus

Use in stratigraphy

The Telychian (Late Llandovery) of Estonia can be defined by five conodont zones (Pterospathodus eopennatus ssp. n. 1, P. eopennatus ssp. n. 2, P. amorphognathoides angulatus, P. a. lennarti and P. a. lithuanicus).[2]

The Sheinwoodian (Wenlock) is defined between the acritarch biozone 5 and the last appearance of Pterospathodus amorphognathoides. The global boundary stratotype point is in Hughley Brook in Apedale, U.K.

gollark: That's nice when it does work, but institutions/rules aren't always aligned with what's "correct"/ethical.
gollark: I see.
gollark: Your last statement seemed very general.
gollark: It doesn't really have more security problems than usual. It's just bad.
gollark: I don't see how educating people on rights and whatever you suggested would fix a problem you claim is caused by people misusing systems.

References

  1. Conodonten des Silurs. Otto H. Walliser, Hessisches Landesamt für Bodenforschung, 1964 - 106 pages
  2. An updated Telychian (Late Llandovery, Silurian) conodont zonation based on Baltic faunas. Peep Männik, Lethaia, Volume 40, Issue 1, pages 45–60, March 2007, doi:10.1111/j.1502-3931.2006.00005.x


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