''Diplognathodus'' is an extinct genus of

conodont Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which ...

s in the family Anchignathodontidae. Specimens are found in Carboniferous and Permian formations. The genus ''Sweetognathus'' originated in the earliest

Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleoz ...

as '' S. expansus'' from ''Diplognathodus edentulus''.Evolution and distribution of the conodonts Sweetognathus and Iranognathus and related genera during the Permian, and their implications for climate change. S Mei, CM Henderson, BR Wardlaw - Palaeogeography, Palaeoclimatology, 2002 ''Diplognathodus ellesmerensis'' has been proposed as a marker of the

Moscovian Moscovian may refer to: *An inhabitant of Moscow, the capital of Russia *Something of, from, or related to Moscow *Moscovian (Carboniferous) The Moscovian is in the International Commission on Stratigraphy, ICS geologic timescale a stage (strati ...

, in the Pennsylvanian age of the Carboniferous.

References

* Hindeodus, Diplognathodus, and Ellisonia Revisited—An Identity Crisis in Permian Conodonts. PH Von Bitter and GK Merrill, Geologica et Palaeontologica, 1985 * Effects of variation on the speciation and phylogeny of Diplognathodus. PH Von Bitter and GK Merrill, Cour. Forsch.-Inst. Senckenberg, 1990

External links

* * Ozarkodinida genera Carboniferous conodonts Permian conodonts Permian genus extinctions Permian extinctions Fossil taxa described in 1975 {{Conodont-stub