AN UPPER MOLAR OF A DOCODONTAN (DOCODONTA, MAMMALIAFORMES) FROM THE LOWER CRETACEOUS OF WESTERN SIBERIA

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Resumo

According to the degree of development of the main cusps and the presence of a small lingual part, the upper molar of a docodontan from the Bol’shoi Kemchug 4 locality (Ilek Formation, Lower Cretaceous) in the Krasnoyarsk Territory corresponds to M1 of Agilodocodon scansorius Meng et al., 2015 from the Middle Jurassic of China. The described tooth may belong to Sibirotherium rossicum Maschenko et al., 2003 known from more complete remains (without M1) from the Ilek Formation of the Shestakovo 1 locality (Kemerovo Region), which could have four upper molars similar in structure to those of Agilodocodon.

Sobre autores

A. Lopatin

Borissiak Paleontological Institute, Russian Academy of Sciences

Autor responsável pela correspondência
Email: alopat@paleo.ru
Russian, Moscow

A. Averianov

Zoological Institute, Russian Academy of Sciences

Email: alopat@paleo.ru
Russian, St. Petersburg

S. Ivantsov

Tomsk State University

Email: alopat@paleo.ru
Russian, Tomsk

I. Kuzmin

Saint Petersburg State University

Email: alopat@paleo.ru
Russian, St. Petersburg

P. Skutschas

Saint Petersburg State University

Email: alopat@paleo.ru
Russian, St. Petersburg

Bibliografia

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  2. Schultz J.A., Bhullar B.-A.S., Luo Z.-X. Re-examination of the Jurassic mammaliaform Docodon victor by computed tomography and occlusal functional analysis // Journal of Mammalian Evolution. 2019. V. 26. P. 9–38.
  3. Averianov A.O., Lopatin A.V., Krasnolutskii S.A., Ivantsov S.V. New docodontans from the Middle Jurassic of Siberia and reanalysis of Docodonta interrelationships // Proceedings of the Zoological Institute of the Russian Academy of Sciences. 2010. V. 314. № 2. P. 121–148.
  4. Luo Z.-X., Meng Q.-J., Ji Q., et al. Evolutionary development in basal mammaliaforms as revealed by a docodontan // Science. 2015. V. 347. № 6223. P. 760–764.
  5. Meng Q.-J., Ji Q., Zhang Y.-G., et al. An arboreal docodont from the Jurassic and mammaliaform ecological diversification // Science. 2015. V. 347. № 6223. P. 764–768.
  6. Zhou C.-F., Bhullar B.-A.S., Neander A.I., et al. New Jurassic mammaliaform sheds light on early evolution of mammal-like hyoid bones // Science. 2019. V. 365. № 6450. P. 276–279.
  7. Maschenko E.N., Lopatin A.V., Voronkevich A.V. A new genus of the tegotheriid docodonts (Docodonta, Tegotheriidae) from the Early Cretaceous of West Siberia // Russian Journal of Theriology. 2003. V. 1. № 2. P. 75–81.
  8. Лопатин А.В., Аверьянов А.О., Мащенко Е.Н., Лещинский С.В. Раннемеловые млекопитающие Западной Сибири. 2. Tegotheriidae // Палеонтологический журнал. 2009. № 4. С. 92–100.
  9. Averianov A.O., Martin T., Lopatin A.V., et al. A high-latitude fauna of mid-Mesozoic mammals from Yakutia, Russia // PLOS One. 2018. V. 13. № 7: e0199983. https://doi.org/10.1371/journal.pone.0199983
  10. Лопатин А.В., Аверьянов А.О., Кузьмин И.Т. и др. Новая находка докодонта (Mammaliaformes, Docodonta) в нижнем мелу Западной Сибири // Доклады Российской академии наук. Науки о Земле. 2020. Т. 494. № 1. С. 5–8.
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  12. Лопатин А.В., Аверьянов А.О., Иванцов С.В. Два новых местонахождения мезозойских млекопитающих в России (Красноярский край, нижний мел) // ДАН. 2019. T. 487. № 4. С. 414–417.

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Declaração de direitos autorais © А.В. Лопатин, А.О. Аверьянов, С.В. Иванцов, И.Т. Кузьмин, П.П. Скучас, 2023

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