Ovaloolithus

Ovaloolithus is an oogenus of dinosaur egg. Eggs of the genus have been found in China, Mongolia and Utah.

Ovaloolithus Temporal range: Late Cretaceous ~
Ovaloolithus chinkangkouensis, on display at the Paleozoological Museum of China.
Egg fossil classification
Basic shell type:	†Dinosauroid-spherulitic
Oofamily:	†Ovaloolithidae
Oogenus:	†Ovaloolithus Zhao, 1979

Species

Oospecies attributed to this genus include:

• O. chinkangkouensis - Cenomanian-Santonian Bayan Shireh Formation, Mongolia, Campanian Jingangkou Formation (Wangshi Group), China
• O. dinornithoides - Maastrichtian Nemegt Formation, Mongolia
• O. laminadermus - Campanian Jingangkou Formation (Wangshi Group), China
• O. tenuisus - Maastrichtian (Lancian) North Horn Formation, Utah
• O. turpanensis - Campanian-Maastrichtian Subashi Formation, China
• O. utahensis - Maastrichtian (Lancian) North Horn Formation, Utah
• Ovaloolithus sp. - Coniacian-Santonian Zhaoying Formation, Cenomanian-Turonian Chichengshan Formation (Tiantai Group) and Turonian Majiacun Formation, China
• O. huangtulingensis
• O. mixistriatus
• O. monostriatus
• O. sangpingensis
• O. tristriatus
• O. weiqiaoensis

See also

• List of dinosaur oogenera

Further reading

• J.-L. Zhang, Q. Wang, S.-X. Jiang, X. Cheng, N. Li, R. Qiu, X.-J. Zhang and Z.-L. Wang. 2017. Review of historical and current research on the Late Cretaceous dinosaurs and dinosaur eggs from Laiyang, Shandong. Vertebrata PalAsiatica 55(2):187-200
• Z. Zhao, S. Zhang, Q. Wang and X. Wang. 2013. Dinosaur diversity during the transition between the middle and late parts of the Late Cretaceous in eastern Shandong Province, China: Evidence from dinosaur eggshells. Chinese Science Bulletin 58(36):4663-4669
• X.-l. Wang, Q. Wang, S.-x. Jiang, X. Cheng, J.-l. Zhang, Z.-k. Zhao, and Y.-g. Jiang. 2012. Dinosaur egg faunas of the Upper Cretaceous terrestrial red beds of China and their stratigraphical significance. Journal of Stratigraphy 36(2):400-416
• S.-K. Zhang and Q. Wang. 2010. [A new species of ovaloolithids from Turpan Basin in Xinjiang, China]. Vertebrata PalAsiatica 48(1):71-75
• X. Liang, S. Wen, D. Yang, S. Zhou, and S. Wu. 2009. Dinosaur eggs and dinosaur egg-bearing deposits (Upper Cretaceous) of Henan Province, China: Occurrences, palaeoenvironments, taphonomy and preservation. Progress in Natural Science 19(11):1587-1601
• K. E. Mikhailov. 2000. Eggs and eggshells of dinosaurs and birds from the Cretaceous of Mongolia. In M. J. Benton, M. A. Shishkin, D. M. Unwin, & E N. Kurichkin (eds.), The Age of Dinosaurs in Russia and Mongolia 560-572
• Carpenter, K. 1999. Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction (Life of the Past). Indiana University Press, Bloomington, Indiana
• X. Yu. 1998. [Characteristics of dinosaur fossils from southern Anhui and their significance for stratigraphic position]. Regional Geology of China 17(3):278-284
• Y. Li, Y. Liu, X. Chen and G. Zhao. 1996. Dinosaurian Embryo II: Young Dinosaur-bones in Ovaloolithus. Earth Science - Journal of China University of Geosciences 21(6):608-610
• 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
• T.-k. Chao and T.-k. Chiang. 1974. Microscopic studies on the dinosaurian egg-shells from Laiyang, Shanting province. Scientia Sinica 17(1):73-90
• C.-C. Young. 1965. [Fossil eggs from Nanshiung, Kwangtung and Kanchou, Kiangsi]. Vertebrata PalAsiatica 9(2):141-170
• C.-C. Young. 1954. Fossil reptilian eggs from Laiyang, Shantung, China. Scientia Sinica 3(4):505-522