Porituberoolithus is an oogenus of dinosaur egg found in the late Campanian of Alberta. It was originally described as distinct from the Elongatoolithids on the basis of its ornamentation, but it was listed as a member of that oofamily by Wang et al. 2010. It is very similar to Subtiliolithus, but has a thicker shell.
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Porituberoolithus Wikipedia(Text) CC BY-SA