Biology: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
Class:	†Conodonta
Clade:	†Prioniodontida
Order:	†Ozarkodinida
Suborder:	†Ozarkodinina
Superfamily:	†Polygnathacea; Bassler, 1925
Families
	†Cavusgnathidae Clark et al., 1981; †Palmatolepidae Müller, 1956; †Polygnathidae Bassler, 1925;

Short description: Extinct superfamily of jawless fish

Polygnathacea is an extinct superfamily of conodonts.

Families

Families are,

↑ 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

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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
Class:	†Conodonta
Clade:	†Prioniodontida
Order:	†Ozarkodinida
Suborder:	†Ozarkodinina
Superfamily:	†Polygnathacea Bassler, 1925^[1]
Families
†Cavusgnathidae Clark et al., 1981 †Palmatolepidae Müller, 1956 †Polygnathidae Bassler, 1925