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. 2018 Mar 15;8:3170. doi: 10.1038/s41598-018-21386-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Paleogeographic distribution of major dinosaur oofamilies. (a) Comparison of paleolatitude of dinosaur egg/eggshell localities, showing that most localities range within 20° and 60° (highlighted in pink) whereas spheroolithid and prismatoolithid eggshells are also known from higher latitudes (Kakanaut locality at 76.7°N). (b) Paleogeographic distribution of dinosaur egg/eggshell localities of Jurassic age. (c) Paleogeographic distribution of dinosaur egg/eggshell localities of Early Cretaceous. (d) Paleogeographic distribution of Spheroolithidae and Megaloolithidae in the Late Cretaceous (dots). (e) Paleogeographic distribution of Faveoloolithidae during the Late Cretaceous (dots). (f) Paleogeographic distribution of Dendroolithidae, Elongatoolithidae, and Prismatoolithidae during the Late Cretaceous (dots). The maps were created with Adobe Illustrator CS5 based on the original maps provided by Global Paleogeography and Tectonics in Deep Time ©2016 Colorado Plateau Geosystems Inc.