Spheroolithidae
Temporal range: Early – Late Cretaceous
~
Spheroolithus eggs from China
Egg fossil classification Edit this classification
Basic shell type: †Dinosauroid-spherulitic
Oofamily: †Spheroolithidae
Oogenera

†Guegoolithus
†Spheroolithus
†Paraspheroolithus

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

References

  1. ↑ 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. doi:10.1016/j.cretres.2014.05.017.
  2. ↑ 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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