Tubercuoolithus
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| Tubercuoolithus Temporal range: | |
|---|---|
Egg fossil classification  | |
| Oofamily: | incertae sedis |
| Oogenus: | †Tubercuoolithus Jackson and Varricchio, 2010 |
| Oospecies | |
| |
Tubercuoolithus is an oogenus of dinosaur egg from the early Campanian of Montana.[1]
Tubercuoolithus is so far known only from the Two Medicine Formation in Montana, which is dated to the Campanian. The fossils were found in Teton County, at a locality dated to 80 million years old.[1]
Discovery
Fossil eggs are very common at the Two Medicine Formation, including the eggs of Troodon and Maiasaura. However, until 2010 no eggs were known from the lower half of that formation. Then, two paleontologists at the University of Montana, Frankie D. Jackson and David J. Varricchio, discovered a fossil egg site at Sevenmile Hill near the base of the formation. These discoveries included Tubercuoolithus, and constituted the oldest fossil eggs known from the Two Medicine.[1]