Spheroolithus is an oogenus of dinosaur egg.Wang Q, Wang X L, Zhao Z K, and Jiang Y G. (2012). "A new oofamily of dinosaur egg from the Upper Cretaceous of Tiantai Basin, Zhejiang Province, and its mechanism of eggshell formation" Chinese Science Bulletin. 57: 3740-3747. doi: 10.1007/s11434-012-5353-2
Oospecies The following species are described:Spheroolithus in the Paleobiology Database Paraspheroolithus sanwangbacunensis Paraspheroolithus yangchengensis Spheroolithus albertensis Spheroolithus choteauensis Spheroolithus europaeus Spheroolithus irenensis Spheroolithus jincunensis Spheroolithus maiasauroides Spheroolithus megadermus Spheroolithus spheroides Spheroolithus tenuicorticus
Distribution Fossils of the oogenus were found in: Dinosaur Park and Oldman Formations, Alberta, Canada China Ohyamashimo Formation, Japan Cerro del Pueblo Formation (Difunta Group), Mexico Nemegt & Bayan Shireh Formations, Mongolia La Posa Formation (Tremp Group), Spain Two Medicine Formation, Montana and North Horn Formation, Utah, United States Lameta Formation, India
Gallery
See also List of dinosaur oogenera
References
Bibliography Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana Z. Zhao. 1979. [Advances in the study of fossil dinosaur eggs in our country]. Mesozoic and Cenozoic red beds of South China; selected papers from the field conference on the South China Cretaceous-Early Tertiary red beds. Science Press, Beijing 330-340