Full reference: F. D. Jackson and D. J. Varricchio. 2010. Fossil eggs and eggshell from the lowermost Two Medicine Formation of western Montana, Sevenmile Hill locality. Journal of Vertebrate Paleontology 30(4):1142-1156
Sister taxa: Spheroolithus albertensis, Spheroolithus europaeus, Spheroolithus irenensis, Spheroolithus jincunensis, Spheroolithus maiasauroides, Spheroolithus megadermus, Spheroolithus spheroides, Spheroolithus tenuicorticus, Paraspheroolithus yangchengensis, Paraspheroolithus sanwangbacunensis
Type specimen: ES 113, an egg. Its type locality is Dave and Joel Quarry (E-2), which is in a Campanian terrestrial horizon in the Two Medicine Formation of Montana.
Ecology: ground dwelling herbivore
• Cretaceous of United States (4: Montana collections)
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.