Prioniodontida
| Prioniodontida ("Complex conodonts") Temporal range:
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|---|---|
| Scientific classification Error creating thumbnail: | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | †Conodonta |
| Clade: | †Euconodonta |
| Clade: | †Prioniodontida Dzik, 1976[1] |
| Orders | |
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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
[edit | edit source]This is a recent cladogram of the Prioniodontida, simplified from Donoghue et al., (2008).[2]
| Prioniodontida | |
Notes
[edit | edit source]- ^ Bactrognathidae is actually only one of two families (the other unnamed) belonging to a superfamily that is as yet unnamed.
References
[edit | edit source]- ^ Remarks on the evolution of Ordovician conodonts. J Dzik, Acta Palaeontologica Polonica, 1976, volume 21, no 4 (pdf, retrieved 30 April 2016)
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