Prioniodontida
Extinct clade of conodonts
Prioniodontida ("Complex conodonts") Temporal range: PreꞒ Ꞓ O S D C P T J K Pg N | |
---|---|
Scientific classification ![]() | |
Domain: | Eukaryota |
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[citation needed].
Phylogeny
This is a recent cladogram of the Prioniodontida, simplified from Donoghue et al., (2008).[2]
Prioniodontida | |
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)
- ^ a b 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. S2CID 8005990.
- ^ Gabbott, S.E.; Aldridge, R.J.; Theron, J.N. (1995). "A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa". Nature. 374 (6525): 800. Bibcode:1995Natur.374..800G. doi:10.1038/374800a0. S2CID 4342260.
- ^ 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.
- v
- t
- e
- Basal member
- Cephalochordate
- Olfactores
![Forerunner](http://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Schematic_anatomical_reconstruction_of_Pikaia_flipped.png/80px-Schematic_anatomical_reconstruction_of_Pikaia_flipped.png)
Cyclostomata | |
---|---|
†Conodonts | |
†Ostracoderms |
†Placoderms | |||||
---|---|---|---|---|---|
†Acanthodii | |||||
Cartilaginous | |||||
Bony |
|
† extinct