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Spheroolithidae
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| Spheroolithidae | |
|---|---|
| |
| Spheroolithus eggs from China | |
Egg fossil classification 
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| Basic shell type: | †Dinosauroid-spherulitic |
| Oofamily: | †Spheroolithidae |
| Oogenera | |
Spheroolithidae is an oofamily of dinosaur eggs. It contains Guegoolithus, Spheroolithus, and Paraspheroolithus.[1] Like modern birds, the eggshell membrane formed before the calcareous part of the shell.[2]
See also
[edit]References
[edit]- ^ Moreno-Azanza, M.; Canudo, J.I.; Gasca, J.M. (2014). "Spheroolithid eggshells in the Lower Cretaceous of Europe. Implications for eggshell evolution in ornithischian dinosaurs" (PDF). Cretaceous Research. 51: 75–87. Bibcode:2014CrRes..51...75M. doi:10.1016/j.cretres.2014.05.017.
- ^ 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.
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