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
Contacts

Русскоязычный вариант сайта
A new genus of the tegotheriid docodonts (Docodonta, Tegotheriidae) from the Early Cretaceous of West Siberia
Maschenko E.N., Lopatin A.V., Voronkevich A.V.
P. 75-81
Sibirotherium rossicus gen. et sp. nov. from the Early Cretaceous Ilek Svita in West Siberia (Shestakovo locality) is described based on lower jaw fragments. The lower molars exhibit the typical docodont pattern with the main cusp a connected by transverse crests to the lingual cusps c and g. By absence of crests b–g and c–d, and presence of crests b–e and e–g, as well as by the development of an enlarged anterior basin, Sibirotherium gen. nov. is similar to Tegotherium from the Late Jurassic of Mongolia. These two genera are united in the endemic Asian family Tegotheriidae. The new genus is plesiomorphic in retaining well developed crest d–f, and it is more derived than Tegotherium in partial reduction of the crest e–g. The morphological diversity of the tegotheriids suggests a significant differentiation of the Late Jurassic — Early Cretaceous docodonts in Asia.

References

  • Alifanov V.R., Efimov M.B., Novikov I.V. & Morales M. 1999. [A new psittacosaur complex of tetrapods from the Lower Cretaceous Shestakovo locality (southern Siberia)] // Doklady Akademii Nauk. T.369. No.4. P.491-493 [in Russian].
  • Averianov A.O., Voronkevich A.V., Maschenko E.N., Leshchinskiy S.V. & Fayngertz A.V. 2002. A sauropod foot from the Early Cretaceous of Western Siberia, Russia // Acta Paleontologica Polonica. Vol.47. No.1. P.117-124.
  • Butler P.M. 1939. The teeth of the Jurassic mammals // Proceedings of the Zoological Society of London, Series B. Vol.109. P.329-356.
  • Butler P.M. 1997. An alternative hypothesis on the origin of docodont molar teeth // Journal of Vertebrate Paleontology. Vol.17. No.2. P.435-439.
  • Efimov M.B. & Leshchinskiy S.V. 2000. [First record of the fossil crocodile skull in Siberia] // A.V. Komarov (ed.). [Materials of the Regional Conference of the Geologists of Siberia, Far East and North East of Russia]. T.2. Tomsk: GalaPress. P.381-363 [in Russian].
  • Jenkins F.A. 1969. Occlusion in Docodon (Mammalia, Docodonta) // Postilla. No.139. P.1-24.
  • Kermack K.A., Lee A.J., Lees P.M. & Mussett F. 1987. A new docodont from the Forest Marble // Zoological Journal of the Linnean Society. Vol.89. P.1-39.
  • Kielan-Jaworowska Z., Novacek M.J., Trofimov B.A. & Dashzeveg D. 2000. Mammals from the Mesozoic of Mongolia // M.J. Benton, M.S. Shishkin, D.M. Unwin & E.N. Kurochkin (eds.). The Age of Dinosaurs in Russia and Mongolia. Cambridge: Cambridge University Press. P.571-624.
  • Kretzoi M. 1946. On Docodonta, a new order of Jurassic Mammalia // Annales Historico-Naturales Musei Nationalis Hungarici. Vol.39. No.1-10. P.108-111.
  • Kron D.G. 1979. Docodonta // J.A. Lillegraven, Z. Kielan-Jaworowska & W.A. Clemens (eds.). Mesozoic Mammals: The First Two-Thirds of Mammalian History. Berkeley: University of California Press. P.91-98.
  • Krusat G. 1980. Contribução para o conhecimento da fauna do Kimeridgiano da Mina de lignito Guimarota (Leiria, Portugal). IV Parte. Haldanodon exspectatus Kühne & Krusat 1972 (Mammalia, Docodonta) // Memórias dos Serviços Geológicos de Portugal. Vol.27. P.1-79.
  • Kühne W.S. & Krusat G. 1972. Legalisierung das taxon Haldanodon (Mammalia, Docodonta) // Neues Jahrbuch für Geologie und Paläntologie, Monatshefte. Hf.5. S.300-302.
  • Leshchinskiy S.V., Fayngertz A.V., Voronkevich A.V., Maschenko E.N. & Averianov A.O. 2000. [Preliminary results of the investigation of the Shestakovo localities of Early Cretaceous vertebrates] // A.V. Komarov (ed.). [Materials of the Regional Conference of the Geologists of Siberia, Far East and North East of Russia]. T.2. Tomsk: GalaPress. P.363-366 [in Russian].
  • Leshchinskiy S.V, Voronkevich A.V., Fayngertz A.V., Maschenko E.N., Lopatin A.V. & Averianov A.O. 2001. Early Cretaceous vertebrate locality Shestakovo, Western Siberia, Russia: a refugium for Jurassic relicts? // Journal of Vertebrate Paleontology. Vol.21. Supplement to No.3. P.73A.
  • Lillegraven J.A. & Krusat G. 1991. Cranio-mandibular anatomy of Haldanodon exspectatus (Docodonta; Mammalia) from the Late Jurassic of Portugal and its implications to the evolution of mammalian characters // Contributions to Geology, University of Wyoming. Vol.28. No.2. P.39-138.
  • Martin T. & Averianov A.O. In press. A docodont (Mammaliaformes) from the Middle Jurassic of Kyrgyzstan // Journal of Vertebrate Paleontology.
  • Martin T. & Nowotny M. 2000. The docodont Haldanodon from the Guimarota mine // T. Martin & B. Krebs (eds.). Guimarota - a Jurassic Ecosystem. Munchen: Verlag Dr. Friedrich Pfeil. P.91-96.
  • Maschenko E.N. & Lopatin A.V. 1998. First record of an Early Cretaceous triconodont mammal in Siberia // Bulletin de l'Institute Royal des Sciences Naturelles de Belgique. T.68. P.233-236.
  • Maschenko E.N., Lopatin A.V. & Voronkevich A.V. 2000. [New Early Cretaceous mammals from Shestakovo locality (Kemerovo Region)] // N.V. Kruchinina & T.L. Modzalevskaya (eds.). [Paleontology in Russia: Results and Perspectives. Abstracts of Reports on 46th Session of the Paleontological Society at RAS]. Sankt-Peterburg: Paleontologicheskoe Obshchestvo. P.61-62 [in Russian].
  • Maschenko E.N., Lopatin A.V. & Voronkevich A.V. 2001. [Early Cretaceous pseudotribosphenic mammals from Shestakovo-1 locality (southeastern West Siberia)] // V.M. Podobina (ed.). [Evolution of Life on the Earth]. Tomsk: Izdatel'stvo Nauchno-Technicheskoi Literatury. P.451 [in Russian].
  • Maschenko E.N., Lopatin A.V. & Voronkevich A.V. 2002. [New Early Cretaceous mammal from West Siberia] // Doklady Akademii Nauk. T.386. No.5. P.00-00 [in Russian].
  • Osyko T.I. 1958. [West Siberian depression and eastern slope of the Ural mountains] // N.K. Ovechkin (ed.). [Geological Structure of the USSR]. T.1. Moskva: Gosudarstvennoe Nauchno-Technicheskoe Izdatel'stvo po Geologii i Okhrane Nedr. P.460-466 [in Russian].
  • Rozhdestvensky A.K. 1960. [Early Cretaceous dinosaur locality in Kuzbass] // Paleontologicheskii Zhurnal. No.2. P.165 [in Russian].
  • Sigogneau-Russell D. 2001. Docodont nature of Cyrtlatherium, an upper Bathonian mammal from England // Acta Palaeontologica Polonica. Vol.46. No.3. P.427-430.
  • Simpson G.G. 1929. American Mesozoic Mammalia // Memoirs of the Peabody Museum. Vol.3. Pt.1. P.1-235.
  • Tatarinov L.P. 1994. [On an unusual mammalian tooth from the Mongolian Jurassic] // Paleontologicheskii Zhurnal. No.2. P.97-105 [in Russian].
  • Tatarinov L.P. & Maschenko E.N. 1999. [A find of an aberrant tritylodont (Reptilia, Cynodontia) in the Lower Cretaceous of Kemerovo Region] // Paleontologicheskii Zhurnal. No.4. P.85-92 [in Russian].
  • Waldman M. & Savage R.J.G. 1972. The first Jurassic mammal from Scotland // Journal of the Geological Society. Vol.128. P.119-125.

Download PDF