Polygnathacea

Polygnathacea
10–11. Polygnathus sp. (see caption) 10–14. Conodonts from the basal 20 cm of the Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. (93RS–79a), and Westernport, Md. (93RS–67). Note the highly abraded and reworked aeolian forms. 10. Polygnathus sp., Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–79a, X140. 11. Polygnathus sp., Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–67, X140.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Infraphylum:	Agnatha
Class:	† Conodonta
Order:	† Ozarkodinida
Suborder:	† Ozarkodinina
Superfamily:	† Polygnathacea Bassler, 1925 [1]
Families
†Cavusgnathidae Clark et al., 1981 †Palmatolepidae Müller, 1956 †Polygnathidae Bassler, 1925

Polygnathacea is an extinct superfamily of conodonts.

Families

Families are:

• †Cavusgnathidae Clark et al., 1981
• †Palmatolepidae Müller, 1956
• †Polygnathidae Bassler, 1925

References

1. Classification and stratigraphic use of the conodonts. RS Bassler - Geological Society of America Bulletin, 1925

• Ontogeny and trophic types of some Tournaisian Polygnathacea (Conodonta). AV Zhuravlev - Courier Forschungsinstitut Senckenberg, 1995
• Variation in the outline and distribution of epithelial cell imprints on the surface of polygnathacean conodont elements. AV Zhuravlev - Lethaia, 2001 - Wiley Online Library
• The architecture and function of Carboniferous polygnathacean conodont apparatuses. RJ Aldridge, MP Smith, RD Norby… - Palaeobiology of …, 1987 - Halsted Press

External links

• "Polygnathacea". The Encyclopedia of Life .
• Polygnathacea at fossilworks.org (retrieved 1 May 2016)