Gekkoolithus is an oogenus of fossil gecko egg. Gecko eggs have not been well-studied, and their fossils are very rare, making classification of them difficult. Gekkolithus eggs are very similar to those of the modern Phelsuma delandis in size, shape, and structure.Hirsch, K.F. (1996). "Parataxonomic Classification of Fossil Chelonian and Gecko Eggs." Journal of Vertebrate Paleontology. 16(4):752-762.
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