Subtiliolithus

Subtiliolithus is an oogenus of fossil egg from Nemegt Formation of Mongolia. The eggs are notable for a very thin eggshell. It contains two oospecies: S. kachchhensis, and S. microtuberculatus. They were originally classified as a distinct oofamily, Subtiliolithidae, but numerous similarities to Laevisoolithus have led to their reclassification as Laevisoolithid eggs. A complete skeleton of Nanantius valifanovi was found associated with Subtiliolithus eggshells, indicating that the oogenus represents eggs of enantiornithine birds.[1][2][3]

Subtiliolithus
Temporal range: Late Cretaceous
Egg fossil classification
Basic shell type: Ornithoid
Morphotype: Ornithoid-ratite
Oofamily: †Laevisoolithidae
Oogenus: †Subtiliolithus

See also

References
  1. K. E. Mikhailov. 1991. Classification of fossil eggshells of amniotic vertebrates. Acta Palaeontologica Polonica 36(2):193-238
  2. Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana.
  3. Kurochkin, E.N., S. Chatterjee, and K.E. Mikhailov. (2013) "An Embryonic Enantiornithine Bird and Associated Eggs from the Cretaceous of Mongolia." Paleontological Journal 47(11):1252-1269.


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