Montanoolithus
| Montanoolithus Temporal range: Late Cretaceous | |
|---|---|
Eggshell classification  | |
| Basic shell type: | Ornithoid |
| Morphotype: | Ornithoid-ratite |
| Oofamily: | †Montanoolithidae |
| Oogenus: | †Montanoolithus |
Montanoolithus is an oogenus of fossil egg native to Montana. The eggs are about 12 cm long and 6 cm wide, and have a shell 0.7-0.85 mm thick. The holotype eggs were laid in a circular pattern on top of a sandstone mound. Montanoolithus eggs belonged to some kind of maniraptoran theropod, probably a dromaeosaur.[1]
References
- ↑ D. K. Zelenitsky and F. Therrien. (2008) "Unique maniraptoran egg clutch from the Upper Cretaceous Two Medicine Formation of Montana reveals theropod nesting behaviour." Palaeontology 51(6):1253-1259
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