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  • Prismatoolithus sp.


    Images:

    oilshale

    Taxonomy

    Dinosaur egg

    Kingdom: Animalia
    Phylum: Chordata
    Class: Reptilia
    Order: incertae sedis
    Family: Prismatoolithidae
    Genus: Prismatoolithus
    Species: Prismatoolithus sp.

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Sub Period: None
    Epoch: Late
    International Age: Late Coniacian - Late Santonian

    Stratigraphy

    Majiacun Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Width: 47 mm

    Location

    Neixiang
    Henan Province
    China

    Comments

    The eggs were preserved standing up, vertically and obliquely in siltstone. Eggshells are very thin and smooth on the outer surface. The thickness of the eggshell is between 0.6 and 0.9 mm. The eggs are 105– 116 mm long and 36–48 mm wide.

    Possibly Prismatoolithus gebiensis Zhao & Li, 1993. 

    Prismatoolithus eggs likely belonged to troodontids.

    Lit.: 
    Xinquan Liang, Shunv Wen, Dongsheng Yang, Shiquan Zhou, Shichong Wu (2009) Dinosaur eggs and dinosaur egg-bearing deposits (Upper Cretaceous) of Henan Province, China: Occurrences, palaeoenvironments, taphonomy and preservation. Progress in Natural Science 19 (2009) 1587–1601.

     



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