Girish Mahajan (Editor)

Tarrasiiformes

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Kingdom
  
Animalia

Infraphylum
  
Gnathostomata

Phylum
  
Chordata

Subclass
  
Chondrostei

Subphylum
  
Vertebrata

Superclass
  
Osteichthyes

Rank
  
Order

Similar
  
Chondrostei, Perleidiformes, Palaeonisciformes, Birgeriidae, Pholidophoriformes

Tarasiiformes is an extinct order of prehistoric ray-finned fish.

Contents

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

    • 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.

    References

    Tarrasiiformes Wikipedia
    (Text) CC BY-SA


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