Ozarkodinida

Ozarkodinida
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
(unranked):	†Prioniodontida
Order:	†Ozarkodinida; Dzik 1976
Families
	Anchignathodontidae Clark 1972; Cavusgnathidae Austin & Rhodes 1981; Cryptotaxidae Klapper & Philip 1971; Elictognathidae Austin & Rhodes 1981; Gnathodontidae Sweet 1988; Idiognathodontidae Harris & Hollingsworth 1933; Kockelellidae Klapper 1981; Mestognathidae Austin & Rhodes 1981; Palmatolepidae Sweet 1988; Polygnathidae Bassler 1925; Pterospathodontidae Cooper 1977; Spathognathodontidae Hass 1959; Sweetognathidae Ritter 1986;
Synonyms
	Polygnathida Barskov, 1995

Ozarkodinida is an extinct conodont order.^[1]^[2] It is part of the clade Prioniodontida, also known as the "complex conodonts". There are two suborders of Ozarkodinida : Prioniodinina and Ozarkodinina.

Elements

The feeding apparatus of ozarkodinids is composed at the front of an axial Sa element, flanked by two groups of four close-set elongate Sb and Sc elements which were inclined obliquely inwards and forwards. Above these elements lay a pair of arched and inward pointing (makellate) M elements. Behind the S-M array lay transversely oriented and bilaterally opposed (pectiniform, i.e. comb-shaped) Pb and Pa elements.^[3]

References

^ Dzik, J (1976). "Remarks on the evolution of Ordovician conodonts" (PDF). Acta Palaeontologica Polonica. 21 (4): 395–458. Retrieved 30 April 2016.
^ Dzik, J (1991). "Evolution of the oral apparatuses in the conodont chordates" (PDF). Acta Palaeontologica Polonica. 36 (3): 265–332. Retrieved 30 April 2016.
^ Purnell, M. A.; Donoghue, P. C. (1997). "Architecture and functional morphology of the skeletal apparatus of ozarkodinid conodonts". Philosophical Transactions of the Royal Society B: Biological Sciences. 352 (1361): 1545–1564. doi:10.1098/rstb.1997.0141. PMC 1692076.

External links

Data related to Ozarkodinida at Wikispecies
Ozarkodinida at fossilworks.org (retrieved 30 April 2016)
"Ozarkodinida" at the Encyclopedia of Life

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[1] Dzik, J (1976). "Remarks on the evolution of Ordovician conodonts" (PDF). Acta Palaeontologica Polonica. 21 (4): 395–458. Retrieved 30 April 2016.

[2] Dzik, J (1991). "Evolution of the oral apparatuses in the conodont chordates" (PDF). Acta Palaeontologica Polonica. 36 (3): 265–332. Retrieved 30 April 2016.

[3] Purnell, M. A.; Donoghue, P. C. (1997). "Architecture and functional morphology of the skeletal apparatus of ozarkodinid conodonts". Philosophical Transactions of the Royal Society B: Biological Sciences. 352 (1361): 1545–1564. doi:10.1098/rstb.1997.0141. PMC 1692076.

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