Article · Wikipedia archive · Last revised Jun 8, 2026

Mosaicoolithus

Mosaicoolithus is an oogenus of fossil egg from the Cenomanian Chichengshan Formation and Albian to Cenomanian Laijia Formation of Tiantai County, Zhejiang Province in China. Its classification is uncertain. The eggs are spherical, and 8.8 cm in diameter. It is distinctive for having irregular pore canals, sometimes filled by secondary shell units. Originally, it was classified as two separate oospecies of Spheroolithus: S. zhangtoucaoensis and S. jincunensis. However, these oospecies were synonymized and placed into a new oogenus by Wang et al. (2011).

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Mosaicoolithus
Temporal range: Albian-Cenomanian
~
Egg fossil classification Edit this classification
Oofamily: incertae sedis
Oogenus: †Mosaicoolithus
Wang et al., 2011
Oospecies
  • †M. zhangtoucaoensis Fang et al. 2000 (type)

Mosaicoolithus is an oogenus of fossil egg from the Cenomanian Chichengshan Formation (Tiantai Group) and Albian to Cenomanian Laijia Formation (Qujiang Group) of Tiantai County, Zhejiang Province in China. Its classification is uncertain. The eggs are spherical, and 8.8 cm in diameter. It is distinctive for having irregular pore canals, sometimes filled by secondary shell units. Originally, it was classified as two separate oospecies of Spheroolithus: S. zhangtoucaoensis and S. jincunensis. However, these oospecies were synonymized and placed into a new oogenus by Wang et al. (2011).1

References

References

  1. Wang Qiang, Zhao Zi-kui, Wang Xiao-lin, and Jiang Yan-gen. (2011) "New ootypes of dinosaur eggs from the Late Cretaceous in Tiantai Basin, Zhejiang Province, China." Vertebrata PalAsiatica 49(4):446–449.