Spheroolithidae

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

Spheroolithidae is an oofamily of dinosaur eggs. It contains Guegoolithus, Spheroolithus, and Paraspheroolithus. Like modern birds, the eggshell membrane formed before the calcareous part of the shell.

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