''Ovaloolithus'' is an oogenus of dinosaur egg. Eggs of the genus have been found in

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Mongolia Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, ...

and

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

Species

Oospecies attributed to this genus include:''Ovaloolithus''
in the

Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...

* ''O. chinkangkouensis'' -

Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...

Santonian The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya (million years ago) and 83.6 ± 0.7 mya. The ...

Bayan Shireh Formation The Bayan Shireh Formation (also known as Baynshiree/Baynshire, Baynshirenskaya Svita or Baysheen Shireh) is a geological formation in Mongolia, that dates to the Cretaceous period. It was first described and established by Vasiliev et al. 1959. ...

, Mongolia, Campanian Jingangkou Formation ( Wangshi Group), China * ''O. dinornithoides'' -

Maastrichtian The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from ...

Nemegt Formation, Mongolia * ''O. laminadermus'' - Campanian Jingangkou Formation ( Wangshi Group), China * ''O. tenuisus'' -

(

Lancian The Lancian was a North American faunal stage of the Late Cretaceous. It was the final stage of the Cretaceous period in North America, lasting from approximately 70.6 to 66 million years ago. Geology Terrestrial sedimentary strata from the Judit ...

) North Horn Formation, Utah * ''O. turpanensis'' - Campanian-

Subashi Formation, China * ''O. utahensis'' -

(

) North Horn Formation, Utah * ''Ovaloolithus sp.'' -

Coniacian The Coniacian is an age or stage in the geologic timescale. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series and spans the time between 89.8 ± 1 Ma and 86.3 ± 0.7 Ma (million years ago). The Coniacian is preceded by t ...

Zhaoying Formation The Zhaoying Formation is a Coniacian geologic formation in Henan Province, China.Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...

Turonian The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by t ...

Chichengshan Formation (

Tiantai Group Tiantai or T'ien-t'ai () is an East Asian Buddhist school of Mahāyāna Buddhism that developed in 6th-century China. The school emphasizes the ''Lotus Sutra's'' doctrine of the "One Vehicle" ('' Ekayāna'') as well as Mādhyamaka philosoph ...

) and

Majiacun Formation The Majiacun Formation is a Santonian to Coniacian geologic formation in China. * '' Zhanghenglong, Zhanghenglong yangchengensis''Xing et al., 2014 * Baryonychinae indet.? (possibly an indeterminate theropod due to no shared synapomorphies prese ...

, China * ''O. huangtulingensis'' * ''O. mixistriatus'' * ''O. monostriatus'' * ''O. sangpingensis'' * ''O. tristriatus'' * ''O. weiqiaoensis''

References

* 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. 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. haracteristics 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. dvances 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. ossil 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 Dinosaur reproduction Cretaceous China Fossils of China Cretaceous Mongolia Fossils of Mongolia Cretaceous geology of Utah Paleontology in Utah Fossil parataxa described in 1979 {{eggshell-stub

Species

See also

References

Further reading