''Pterospathodus'' is an extinct genus of

conodont Conodonts, are an extinct group of marine jawless vertebrates belonging to the class Conodonta (from Ancient Greek κῶνος (''kōnos''), meaning " cone", and ὀδούς (''odoús''), meaning "tooth"). They are primarily known from their hard ...

from the

Silurian The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of t ...

period.

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'').An updated Telychian (Late Llandovery, Silurian) conodont zonation based on Baltic faunas. Peep Männik, Lethaia, Volume 40, Issue 1, pages 45–60, March 2007, 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.

References

External links

* * Ozarkodinida genera Silurian conodonts Paleozoic life of Ontario Paleozoic life of Quebec {{conodont-stub