Tarrasiiformes
Tarrasiiformes Temporal range:
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†Paratarrasius hibbardi Lund and Melton Jr. 1982 from the Mississippian (Serpukhovian) Heath Formation of Bear Gulch, Montana | |
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Order: | Tarrasiiformes
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Tarasiiformes is an extinct order of prehistoric ray-finned fish.
Taxonomy
- Order †Tarrasiiformes sensu Lund & Poplin 2002 [Haplistia]
- Family †Tarrasiidae Traquair 1881 emend. Woodward 1891
- Genus †Apholidotos Lund ex Frickinger 1991 nomen novum
- Species †Apholidotos ossna Lund ex Frickinger 1991 nomen novum
- Genus †Paratarrasius Lund & Melton 1982
- Species †Paratarrasius hibbardi Lund & Melton 1982
- Genus †Tarrasius Traquair 1881
- Species †Tarrasius problematicus Traquair 1881
- Genus †Apholidotos Lund ex Frickinger 1991 nomen novum
- Family †Tarrasiidae Traquair 1881 emend. Woodward 1891
Timeline of genera
Tarrasius is an extinct genus of Tarasiiformes. Tarrasius problematicus (of Mississippian origin, ~ 350 Ma) featured a fully regionalized tetrapod-like spine divided into 5 distinct segments. It is not considered a transitional fossil though, but an extreme example of convergent evolution.
See also
Bibliography
- Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 1–560. Retrieved 2011-05-17.