Subtiliolithusis anoogenusoffossil eggfrom theNemegt Formationof Mongolia and theOhyamashimo Formationof Japan. The eggs are notable for a very thin eggshell. It contains three oospecies:S. hyogoensis,S. kachchhensisandS. microtuberculatus.They were originally classified as a distinct oofamily, Subtiliolithidae, but numerous similarities toLaevisoolithushave led to their reclassification asLaevisoolithideggs. A complete skeleton ofNanantius valifanoviwas found associated withSubtiliolithuseggshells, indicating that the oogenus represents eggs ofenantiornithinebirds.[1][2][3]
| Subtiliolithus Temporal range:
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Egg fossil classification
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| Basic shell type: | Ornithoid |
| Morphotype: | Ornithoid-ratite |
| Oofamily: | †Laevisoolithidae |
| Oogenus: | †Subtiliolithus Mikhailov, 1991 |
References
edit- ^K. E. Mikhailov. 1991. Classification of fossil eggshells of amniotic vertebrates. Acta Palaeontologica Polonica 36(2):193-238
- ^Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana.
- ^Kurochkin, E.N., S. Chatterjee, and K.E. Mikhailov. (2013) "An Embryonic Enantiornithine Bird and Associated Eggs from the Cretaceous of Mongolia."Paleontological Journal47(11):1252-1269.
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