Английская Википедия:Ceratobairdia

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Шаблон:Short description Шаблон:Automatic taxobox

Ceratobairdia is an extinct genus of ostracod (seed shrimp) belonging to the order Podocopida and family Bairdiidae.[1] Specimens have been found in Permian[2] to Jurassic[3] beds in North America,[2] China,[4] and Europe.[3]

The genus is heavily ornamented,[5] and a distinctive characteristic is that its valves (shells) have a flat ventral surface and a ventrolateral alate ridge (a winglike ridge extending from the ventral surface to the side of the valve.)[6] The genus is also notable as a Lazarus taxon, disappearing in the Permian-Triassic extinction event and reappearing in the Carnian,[5] an interval of at least 15 million years.

Species

  • C. ambigua Ishizaki 1964[4]
  • C. dorsospinosa Sohn 1954[2]
  • C. sinensis Wang 1978[1]
  • C. triassica Bolz 1971[3]
  • C. venterocostata Wang 1978[7]
  • C. xiaobaensis Xie 1989[8]

References

Шаблон:Portal Шаблон:Reflist

Шаблон:Taxonbar


Шаблон:Ostracod-stub