Ozarkodinida

Short description: Extinct order of jawless fishes

Ozarkodinida

Scientific classification
Domain:  | Eukaryota
Kingdom:  | Animalia
Phylum:  | Chordata
Class:  | †Conodonta
Clade:  | †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".

## Contents

* 1 Name
* 2 Elements
* 3 References
* 4 External links

## Name

Ozarkodinida is named after the Ozark Mountains of Missouri, United States.

## 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

1. ↑ Dzik, J (1976). "Remarks on the evolution of Ordovician conodonts". Acta Palaeontologica Polonica 21 (4): 395–458. http://agro.icm.edu.pl/agro/element/bwmeta1.element.agro-b4cc19ac-ec31-4655-9773-fa68a02d9ecb/c/app21-395.pdf. Retrieved 30 April 2016.
2. ↑ Dzik, J (1991). "Evolution of the oral apparatuses in the conodont chordates". Acta Palaeontologica Polonica 36 (3): 265–332. https://app.pan.pl/archive/published/app36/app36-265.pdf. 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.

## External links

Wikidata ☰ Q21366705 entry

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