Gatunek typowy
Polygnathus angustidiscus Youngquist, 1945 from the Frasnian Independence Shale of Iowa.

Opis

Polygnathids with robustly appearing platform that does not reach the dorsal (‘posterior’) tip in most of the P1 elements even at late ontogenetic stages.
The morphology of Ctenopolygnathus is so simple and underived that there is a great chance of its convergent origin. If this is true, the only guide to taxonomic identity of species included in the genus is their stratophenetically traced relationship to the type species.

Synonimy

Zasięg czasowy

Literatura

Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.