Prioniodontida

Prioniodontida; ("Complex conodonts")
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
Clade:	†Euconodonta
Clade:	†Prioniodontida; Dzik, 1976[1]
Orders
	See text

Prioniodontida, also known as the "complex conodonts", is a large clade of conodonts that includes two major evolutionary grades; the Prioniodinina and the Ozarkodinina.[2] It includes many of the more famous conodonts, such as the giant ordovician Promissum (Prioniodinina) from the Soom Shale[3] and the Carboniferous specimens from the Granton Shrimp bed (Ozarkodinina).[4] They are euconodonts, in that their elements are composed of two layers; the crown and the basal body, and are assumed to be a clade.

Phylogeny

This is a recent cladogram of the Prioniodontida, simplified from Donoghue et al., (2008).[2]

Prioniodontida

	Paracordylodus

	Polygnathidae

	Idiognathodontidae

Bactrognathidae[Note 1]

Notes

Bactrognathidae is actually only one of two families (the other unnamed) belonging to a superfamily that is as yet unnamed.

References

Remarks on the evolution of Ordovician conodonts. J Dzik, Acta Palaeontologica Polonica, 1976, volume 21, no 4 (pdf, retrieved 30 April 2016)
Donoghue, P.C.J.; Purnell, M.A.; Aldridge, R.J.; Zhang, S. (2008). "The interrelationships of 'complex' conodonts (Vertebrata)". Journal of Systematic Palaeontology. 6 (2): 119–153. doi:10.1017/s1477201907002234.
Gabbott, S.E.; Aldridge, R.J.; Theron, J.N. (1995). "A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa". Cite journal requires |journal= (help)
Briggs, D.E.G; Clarkson, E.N.K.; Aldridge, R.J. (1983). "The conodont animal". Lethaia. 16 (1): 1–14. doi:10.1111/j.1502-3931.1983.tb01993.x.

External links

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[5] Bactrognathidae is actually only one of two families (the other unnamed) belonging to a superfamily that is as yet unnamed.

[1] Remarks on the evolution of Ordovician conodonts. J Dzik, Acta Palaeontologica Polonica, 1976, volume 21, no 4 (pdf, retrieved 30 April 2016)

[dono2008-2] Donoghue, P.C.J.; Purnell, M.A.; Aldridge, R.J.; Zhang, S. (2008). "The interrelationships of 'complex' conodonts (Vertebrata)". Journal of Systematic Palaeontology. 6 (2): 119–153. doi:10.1017/s1477201907002234.

[gabbott-3] Gabbott, S.E.; Aldridge, R.J.; Theron, J.N. (1995). "A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa". Cite journal requires |journal= (help)

[briggs-4] Briggs, D.E.G; Clarkson, E.N.K.; Aldridge, R.J. (1983). "The conodont animal". Lethaia. 16 (1): 1–14. doi:10.1111/j.1502-3931.1983.tb01993.x.