Hemifaveoloolithus

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Hemifaveoloolithus
Temporal range: Turonian
Egg fossil classification Edit this classification
Basic shell type: Dinosauroid-spherulitic
Oofamily: Faveoloolithidae
Oogenus: Hemifaveoloolithus
Wang et al., 2011
Oospecies
  • H. mushanensis Wang et al. 2011 (type)

Hemifaveoloolithus is an

Zhejiang Province, China. It is a faveoloolithid, having spherical eggs roughly 13 cm in diameter. The shell is distinctive for being composed of four or five superimposed layers of shell units, and the honeycomb-like arrangement of pore canals.[1]

History

During the 21st century, a great diversity of fossil eggs have been described from the Tiantai Basin. In 2011, paleontologists at the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Wang Qiang, Zhao Zikui, and Wang Xiaolin teamed up with Jiang Yan'gen from the Tiantai Bureau of Land and Resources of Zhejiang Province to report the discovery of several new ootaxa at Tiantai, including Hemifaveoloolithus.[1]

Distribution

Hemifaveoloolithus is one of many ootaxa known from

U-Pb dating.[2]

Description

Hemifaveoloolithus fossils are limited to a single incomplete nest with ten preserved eggs.

tangential cross-section a honeycomb-like appearance.[1]

Paleobiology

It is generally uncertain what type of dinosaurs laid faveoloolithid eggs, though they are conjectured to have been laid by sauropods.[5] Unlike most dinosaur eggs, where the shell membrane and the calcareous eggshell form sequentially, in dictyoolithids and faveoloolithids (including Hemifaveoloolithus) the membrane and shell would develop simultaneously, comparable to eggs of modern tuataras.[4]

References

  1. ^ a b c d e f g 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.
  2. ^ Huaiyu He, Xiaolin Wang, Qiang Wang, Shunxing Jiang, Xin Cheng, Jialiang Zhang, Zhonghe Zhou, Zikui Zhao, Yangen Jiang, Fangming Yu, Chenglong Deng, Jinhui Yang, and Rixiang Zhu (2013). "SIMS zircon U–Pb dating of the Late Cretaceous dinosaur egg-bearing red deposits in the Tiantai Basin, southeastern China." Journal of Asian Earth Sciences, 62, 654–661.
  3. ^ a b Zou S.L, Wang Q., and Wang X.L. (2013) "A new oospecies of parafaveoloolithids from the Pingxiang Basin, Jiangxi Province of China." Vertebrata PalAsiatica. 51(2):102–106.
  4. ^ a b Z.-K. Zhao. (1994) "Dinosaur eggs in China:On the structure and evolution of eggshells." In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), Dinosaur Eggs and Babies, Cambridge University Press, Cambridge. Cambridge. pp. 184–203.
  5. PLoS ONE
    , 10(11), e0142829.