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.

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