''Ancyrognathus'' is an extinct genus of conodonts. During the

Famennian The Famennian is the later of two faunal stages in the Late Devonian epoch. The most recent estimate for its duration is that it lasted from around 371.1 to 359.3 million years ago. An earlier 2012 estimate, still used by the International Commis ...

stage of the Late Devonian, a biologic event occurred (Upper Kellwasser Extinction of all '' Ancyrodella'' and '' Ozarkodina'' and most ''

Palmatolepis ''Palmatolepis'' is an extinct conodont genus in the family Palmatolepidae. It was the most abundant genus of conodonts of the Late Devonian, disappearing during the Devonian/Carboniferous crisis. Species * †''Palmatolepis glabra'' * †'' ...

'', ''

Polygnathus ''Polygnathus'' is an extinct genus of conodonts. Species * †''Polygnathus acrinodosus'' Aboussalam 2003 * †''Polygnathus alkhovikovae'' Baranov, Slavík & Blodgett 2014 in paleontology, 2014 * †''Polygnathus angustipennatus'' Bischof ...

'' and ''Ancyrognathus'').

References

External links

* * Conodont genera Devonian conodonts Paleozoic life of Ontario {{conodont-stub