Доклады Академии наукДоклады Академии наук0869-5652The Russian Academy of Sciences1772310.31857/S0869-56524886624-629Research ArticleA find of mollusks Watsonella crosbyi Grabau (Gastropoda: Helcionelliformes) in the Botomian of ChinaParkhaevP. Y.pparkh@paleo.ruPaleontological Institute of the Russian Academy of Sciences3010201948866246291211201912112019Copyright © 2019, Russian academy of sciences2019<p>The mollusk species <em>Watsonella crosbyi</em> Grabau, 1900 is found among other mollusks in the Lower Botomian strata of the Xinji Formation on the Northern China Platform (Shaanxi Province). Taxonomically the mollusks assemblage is extremely similar to those from the Mernmerna Formation, Parara Limestone, and Sellick Hill Formation of Southern Australia, Bastion Formation of Laurentia, and the uppermost Emyaksin Formation of the Siberian Platform. All these starta can be aged as Early Botomian. The new find of <em>Watsonella crosbyi</em> confirms the significant time range of the species distribution (Tommotian-Botomian) and raises doubts in newly proposed correlations of the Lower Cambrian of Southern Australia pushing down the previously determined age of the formations for one or even two ages older.</p>CambrianbiostratigraphymollusksNorth China platformSiberian platformGondwanaLaurentiaкембрийбиостратиграфиямоллюскиСеверо-Китайская платформаСибирская платформаГондванаЛаврентия[ Варламов А.И., Розанов А.Ю., Демиденко Ю.Е. и др. Проект кембрийской части общей стратиграфической шкалы России. Материалы Всерос. совещан. «Общая стратиграфическая шкала России: состояние и перспективы обустройства», Москва, 23-25 Мая 2013 г. / М.: ГИН РАН, 2013. С. 79-87.][ Peng Sanchi, Babcock L.E., Cooper R.A. Chapter 19: The Cambrian Period // The Geologic Time Scale 2012. V. 1. Amsterdam: Elsevier, 2012. P. 437-488.][ Li Guoxiang, Zhao Xin, Gubanov A., et al. // Acta Geol. Sin. 2011. V. 85. № 2. P. 309-319.][ Parkhaev P.Yu., Karlova G.A., Rozanov A.Yu. // Bull. Museum Northern Arizona. 2011. № 67. P. 298-300.][ Parkhaev P.Yu., Karlova G.A., Rozanov A.Yu. // J. Guizhou Univ. 2012. V. 29. Suppl. 1. P. 179-180.][ Parkhaev P.Yu. On the Stratigraphy of Aldanella Attleborensis - Potential Index Species for Defining the Base of Cambrian Stage 2. Ext. Sum. IGCP Project 591 Field Workshop 2014. Nanjing: Nanjing Univ. Press, 2014. P. 102-105.][ Parkhaev P.Yu. Molluscs and Siphonoconchs // The Cambrian Biostratigraphy of the Stansbury Basin, South Australia. Moscow: MAIK Nauka / Interperiodica, 2001. P. 133-210.][ Jacquet S.M., Brougham T., Skovsted Ch.B., et al. // Geol. Mag. 2017. V. 154. № 5. P. 1088-1104.][ Betts M.J., Paterson J.R., Jago J.B. et al. // Gondwana Res. 2016. V. 36. P. 163-195.][ Betts M.J., Paterson J.R., Jacquet S.M., et al. // Earth-Sci. Rev. 2018. V. 185. P. 498-543.][ Kruse P.D., Zhuravlev A.Yu., Parkhaev P.Yu., Zhu Maoyan // Gondwana Res. 2017. V. 44 P. 258-261.][ Пархаев П.Ю. // Стратиграфия. Геол. корреляция. 2019. Т. 27. № 2. С. 52-79.][ Yun Hao, Zhang Xingliang, Li Luoyang, et al. // J. Asian Earth Sci. 2016. V. 129. P. 54-66.][ Kouchinsky A., Steiner M., Clausen S., Vendrasco M. // Acta Palaeontol. Pol. 2015. V. 60. № 2. 421-512.][ Skovsted C.B. // Bull. Geol. Soc. Denmark. 2004. V. 51. P. 11-37.]