Megaloolithidae is an oofamily of fossil egg of the Dinosauroid-spherulitic morphotype.

[1] Megaloolithid eggs with multiple layers of eggshell have been preserved in the fossil record.

[2] Multilayered fossil eggs resemble those of modern forms in sometimes having incomplete extra layers and pore canals that don't properly align.

[3] The misalignment of the pore canals can prevent oxygen from getting to the embryo and cause it to suffocate.

[4] The greater abundance may indicate that these eggs were more prone to such pathologies, but are most likely due to a larger sample size of them.