Tarrasiiformes
Extinct order of fishes
From Wikipedia, the free encyclopedia
Tarasiiformes is an extinct order of prehistoric ray-finned fish.[1]
| Tarrasiiformes Temporal range: | |
|---|---|
| |
| †Paratarrasius hibbardi Lund and Melton Jr. 1982 from the Mississippian (Serpukhovian) Heath Formation of Bear Gulch, Montana | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Tarrasiiformes |
| Families | |
| |
Taxonomy
- Order †Tarrasiiformes sensu Lund & Poplin 2002 [Haplistia][2][3][4]
- Family †Tarrasiidae Traquair 1881 emend. Woodward 1891
- Genus †Apholidotos Lund ex Frickinger 1991
- Species †Apholidotos ossna Lund ex Frickinger 1991
- 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
- 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.[5][6] 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.