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  • Peipiaosteus pani Liu and Zhou, 1965





    Kingdom: Animalia
    Phylum: Chordata
    Class: Actinopterygii
    Order: Acipenseriformes
    Family: Acipenseridae
    Genus: Peipiaosteus
    Species: P. pani
    Author Citation Liu & Zhou, 1965

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Epoch: Early
    Age: Aptian


    Jiufotang Formation


    Acquired by: Purchase/Trade


    Length: 12cm


    Pani Lake


    The order of Acipenseriformes (Sturgeon-like fishes) both includes sturgeons (Acipenseridae) and paddlefish (Polyodontidae).

    At least three Sturgeon-like fishes (Acipenseriformes) can be found in the Jiufotang Formation (Jehol Group) and in the Yixian Formation in western Liaoning and northern Hebei Province China: Peipiaosteus pani Liu and Zhou, 1965, Protopsephurus liui Lu, 1994 and Yanosteus longidorsalis Jin, Tian, Yang & Deng, 1995. The Jiufotang Formation - where this Peipiaosteus comes from - is dated to about 120.3+/-0.7 million years ago, which was during the Aptian age of the Cretaceous; the Yixian Formation - where P. liui and Y. longidorsalis can be found - is dated slightly older, around 125-121 million years ago (Barremian-early Aptian).

    Peipiaosteus pani, Liu and Zhou 1965, a relative of nowadays sturgeons, is from the Jiufotang Formation, Pani Lake, Liaoning. This sturgeon is characterized by a long fusiform trunk and a short dorsal fin. The origin of the dorsal fin is a little before that of the anal fin. The normal size of these specimens normally is around 15 to 30 cm – but I’ve seen a couple of fish exceeding 60cm.


    Liu, H., Zhou J. (1965): A new Sturgeon from the Upper Jurassic of Liaoning, North China. Vertebrata PalAsiatica Vol. 9, No. 3, 1965, p. 237 ff.

    Zhou, Z.(1992): Review on Peipiaosteus based on new materials of P. pani. Vertebrata PalAsiatica Vol 30, No. 2, pp 85-101. 


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