Russian Journal of Theriology. Main page    

Russian Journal of Theriology. Main page
Free access to the published articles
Information about online submission, Articles format, Instructions for authors etc
Instructions for reviewers
Subscription and prices

Русскоязычный вариант сайта
Early Cretaceous mammals from Bol’shoi Kemchug 3 locality in West Siberia, Russia
Averianov A.O., Skutschas P.P., Lopatin A.V., Leshchinskiy S.V., Rezvyi A.S., Fayngertz A.V.
P. 1-12
A small sample of mammalian isolated teeth and edentulous dentary fragments from the Early Cretaceous locality Bol’shoi Kemchug 3 in Krasnoyarsk Territory, West Siberia, Russia, represents five taxa: amphilestid Kemchugia magna gen. & sp. nov., Amphilestidae indet., gobiconodontids Gobiconodon sp. A and B, and Mammalia indet. The large sized Kemchugia magna gen. & sp. nov. is based on two isolated molariforms. Amphilestidae indet. is represented by single molariform and two edentulous dentary fragments. Gobiconodon sp. A is similar in size to G. hoburensis from the Early Cretaceous of Mongolia. Gobiconodon sp. B is some 20% larger than G. borissiaki from the Early Cretaceous of Mongolia. A minute edentulous dentary with alveoli for two posterior molariforms is referred to Mammalia indet. Dental lamina pits on the lingual side of gobiconodontid jaws, interpreted as openings for the epidermal filaments connecting the dental lamina with the growing enamel cup of a developing tooth germ, are reported here for the first time and confirm replacement of molariform teeth in Gobiconodontidae.

DOI: 10.15298/rusjtheriol.4.1.01


  • Averianov A.O., Leshchinskiy S.V., Skutschas P.P., Fayngertz A.V. & Rezvyi A.S. 2004. Dinosaurs from the Early Cretaceous Ilek Formation in West Siberia, Russia // Second European Association of Vertebrate Paleontologists Meeting. Abstracts of Papers. Brno: Moravian Museum. P.6.
  • Averianov A.O., Lopatin A.V., Skutschas P.P., Martynovich N.V., Leshchinskiy S.V., Rezvyi A.S., Krasnolutskii S.A. & Fayngertz A.V. in press a. Discovery of Middle Jurassic Mammals from Siberia // Acta Palaeontologica Polonica.
  • Averianov A.O., Voronkevich A.V., Leshchinskiy S.V. & Fayngertz A.V. in press b. A ceratopsian dinosaur Psittacosaurus sibiricus from the Early Cretaceous of West Siberia, Russia // Journal of Systematic Palaeontology.
  • Cassiliano M.L. & Clemens W.A. 1979. Symmetrodonta // Lillegraven J.A., Kielan-Jaworowska Z. & Clemens W.A. (eds.). Mesozoic Mammals: The First Two-Thirds of Mammalian History. Berkeley: University of California Press. P.150-161.
  • Cifelli R.L., Wible J.R. & Jenkins F.A., Jr. 1998. Triconodont mammals from the Cloverly Formation (Lower Cretaceous), Montana and Wyoming // Journal of Vertebrate Paleontology. Vol.18. No.1. P.237-241.
  • Crompton A.W. & Jenkins F.A., Jr. 1967. American Jurassic symmetrodonts and Rhaetic pantotheres // Science. Vol.155. No.3765. P.1006-1009.
  • Crompton A.W. & Jenkins F.A., Jr. 1968. Molar occlusion in Late Triassic mammals // Biological Reviews. Vol.43. No.4. P.427-458.
  • Ensom P.C. & Sigogneau-Russell D. 2000. New symmetrodonts (Mammalia, Theria) from the Purbeck Limestone Group, Early Cretaceous of southern England // Cretaceous Research. Vol.21. No.6. P.767-779.
  • Freeman E.F. 1979. A Middle Jurassic mammal bed from Oxfordshire // Palaeontology. Vol.22. No.1. P.135-166.
  • Godefroit P. & Guo D.-Y. 1999. A new amphilestid mammal from the Early Cretaceous of China // Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Vol.69. supplement B. P.7-16.
  • Hu Y.-M., Meng J., Wang Y.-Q. & Li C.-K. 2005. Large Mesozoic mammals fed on young dinosaurs // Nature. Vol.433. No.7022. P.149-152.
  • Jenkins F.A., Jr. & Schaff C.R. 1988. The Early Cretaceous mammal Gobiconodon (Mammalia, Triconodonta) from the Cloverly Formation in Montana // Journal of Vertebrate Paleontology. Vol.8. No.1. P.1-24.
  • Kielan-Jaworowska Z., Cifelli R.L. & Luo Z.-X. 2004. Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure. New York: Columbia University Press. 648 p.
  • Leshchinskiy S.V., Averianov A.O., Fayngertz A.V., Skutschas P.P. & Rezvyi A.S. 2003. [New locality of Early Cretaceous mammals in Western Siberia] // Doklady Akademii Nauk. T.391. No.3. P.426-429 [in Russian].
  • Leshchinskiy S.V. & Fayngertz A.V. 2001. [Discovery of a new dinosaur region in Siberia (results of field investigations of 2000-2001)] // [Evolution of Life on the Earth. Materials of the Second International Symposium, 12-15 November]. Tomsk: Isdatel'stvo NTL. P.437-447 [in Russian].
  • Li J.-L., Wang Y., Wang Y.-Q. & Li C.-K. 2001. A new family of primitive mammals from the Mesozoic of western Liaoning, China // Chinese Science Bulletin. Vol.46. No.9. P.782-785.
  • Li C.-K., Wang Y.-Q., Hu Y.-M. & Meng J. 2003. A new species of Gobiconodon (Triconodonta, Mammalia) and its implication for the age of Jehol Biota // Chinese Science Bulletin. Vol.48. No.11. P.1129-1134.
  • Lopatin A.V., Maschenko A.N., Averianov A.O., Rezvyi A.S., Skutschas P.P. & Leshchinskiy S.V. 2005. Early Cretaceous mammals from Western Siberia. 1. Tinodontidae // Paleontologicheskii Zhurnal. No.5. P.00-00.
  • Luo Z.-X. 1994. Sister-group relationships of mammals and transformations of diagnostic mammalian characters // Fraser N.C. & Sues H.-D. (eds.). In the Shadow of the Dinosaurs. Cambridge: Cambridge University Press. P.98-130.
  • Maschenko E.N. & Lopatin A.V. 1998. First record of an Early Cretaceous triconodont mammal in Siberia // Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre. T.68. P.233-236.
  • Maschenko E.N., Lopatin A.V. & Voronkevich A.V. 2002. [New Early Cretaceous mammal from Western Siberia] // Doklady Akademii Nauk. T.386. No.5. P.715-717 [in Russian].
  • Maschenko E.N., Lopatin A.V. & Voronkevich A.V. 2003. A new genus of the tegotheriid docodonts (Docodonta, Tegotheriidae) from the Early Cretaceous of West Siberia // Russian Journal of Theriology. Vol.1. No.2. P.75-81.
  • Mills J.R.E. 1971. The dentition of Morganucodon // Kermack D.M. & Kermack K.A. (eds.). Early Mammals. Zoological Journal of the Linnean Society. Vol.50. Supplement 1. P.29-63.
  • Parrington F.R. 1971. On the Upper Triassic mammals // Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences. Vol.261. No.838. P.231-272.
  • Rougier G.W., Novacek M.J., McKenna M.C. & Wible J.R. 2001. Gobiconodonts from the Early Cretaceous of Oshih (Ashile), Mongolia // American Museum Novitates. No.3348. P.1-30.
  • Rougier G.W., Spurlin B.K. & Kik P.K. 2003. A new specimen of Eurylambda aequicrurius and considerations on symmetrodont dentition and relationships // American Museum Novitates. No.3398. P.1-15.
  • Sigogneau-Russell D. 2003. Diversity of triconodont mammals from the Early Cretaceous of North Africa - Affinities of the amphilestids // Palaeovertebrata. T.32. No.1. P.27-55.
  • Sigogneau-Russell D., Monbaron M. & de Kaenel E. 1990. Nouvelles données sur le gisement à mammifères Mésozoïques du Haut-Atlas Marocain // Geobios. T.23. Fasc.4. P.461-483.
  • Simpson G.G. 1925. Mesozoic Mammalia. II. Tinodon and its allies // American Journal of Science, Series 5. Vol.10. P.451-470.
  • Simpson G.G. 1928. A Catalogue of the Mesozoic Mammalia in the Geological Department of the British Museum. London: British Museum (Natural History). 215 p.
  • Simpson G.G. 1929. American Mesozoic Mammalia // Memoirs of the Peabody Museum of Yale University. Vol.3. No.1. P.1-235.
  • Trofimov B.A. 1978. [The first triconodonts (Mammalia, Triconodonta) from Mongolia] // Doklady Akademii Nauk SSSR. T.243. No.1. P.213-216 [in Russian].
  • Wang Y., Hu Y.-M., Meng J. & Li C.-K. 2001. An ossified Meckel's cartilage in two Cretaceous mammals and the origin of the mammalian middle ear // Science. Vol.294. No.5541. P.357-361.

Download PDF