Spheroolithidae

Spheroolithidae
Temporal range: Early – Late Cretaceous
~
Spheroolithus eggs from China
Egg fossil 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. Like modern birds, the eggshell membrane formed before the calcareous part of the shell.

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