A New Platynotan Lizard (Parasaniwidae, Anguimorpha) from the Late Paleocene of Southern Mongolia


A new lizard, Tsagansaurus nemegetensis gen. et sp. nov., from the Late Paleocene of southern Mongolia is described. It is assigned to the extinct family Parasaniwidae (Platynota, Anguimorpha). The new taxon is the latest representative of this group in the fossil record.

This is a preview of subscription content, log in to check access.


  1. 1

    Alifanov, V.R., Macrocephalosaurs and early stages of the evolution of lizards of Mongolia, Tr. Paleontol. Inst. Ross. Akad. Nauk, 2000, vol. 272, pp. 1–126.

    Google Scholar 

  2. 2

    Alifanov, V.R., Order Lacertilia, in Iskopaemye pozvonochnye Rossii i sopredel’nykh stran. Iskopaemye reptilii i ptitsy. Chast’ 2 (Fossil Vertebrates of Russia and Adjacent Countries: Fossil Reptiles and Birds: Part 2), Kurochkin, E.N. and Lopatin, A.V., Eds., Moscow: Geos, 2012, pp. 7–136.

    Google Scholar 

  3. 3

    Badamgarav, D. and Reshetov, V.Yu., Paleontology and stratigraphy of Paleogene of Transaltai Gobi, Tr. Sovm. Sovet.-Mongol. Paleontol. Eksped., 1985, vol. 25, pp. 1–104.

    Google Scholar 

  4. 4

    Borsuk-Białynicka, M., Anguimorphans and related lizards, Palaeontol. Polon., 1984, no. 46, pp. 5–105.

  5. 5

    Conrad, J.L., Phylogeny and systematics of Squamata (Reptilia) based on morphology, Bull. Am. Mus. Natur. Hist., 2008, no. 310, pp. 1–182.

  6. 6

    Dong, L., Evans, S.E., and Wang, Y., Taxonomic revision of lizards from the Paleocene deposits of the Qianshan Basin, Anhui, China, Vertebr. PalAsiat., 2016, vol. 54, no. 3, pp. 243–268.

    Google Scholar 

  7. 7

    Estes, R., Fossil vertebrates from the Late Cretaceous Lance Formation of Eastern Wyoming, Publ. Geol. Sci. Univ. California, 1964, vol. 49, pp. 1–180.

    Google Scholar 

  8. 8

    Estes, R., Handbuch der Paläoherpetologie: Encyclopedia of Paleoherpetology, vol. 10A: Sauria terrestria, Amphisbaenia, Stuttgart–New York: G. Fisher, 1983.

    Google Scholar 

  9. 9

    Gauthier, J.A., Kearney, M., Maisano, J.A., et al., Assembling the Squamate tree of life: Perspectives from the phenotype and the fossil record, Bull. Peabody Mus. Natur. Hist., 2012, vol. 53, no. 1, pp. 3–308.

    Article  Google Scholar 

  10. 10

    Lee, M.S.Y., The phylogeny of varanoid lizards and affinities of snakes, Philos. Transact. R. Soc. B Biol. Sci., 1997, vol. 352, no. 1349, pp. 53–91.

    Google Scholar 

  11. 11

    Lopatin, A.V., Early Paleogene insectivore mammals of Asia and establishment of the major groups of Insectivora, Paleontol. J., 2006, vol. 40, suppl. no. 3, pp. 205–405.

    Article  Google Scholar 

  12. 12

    Maisano, J.A., Bell, C.J., Gauthier, J.A., and Rowe, T., The osteoderms and palpebral in Lanthanotus borneensis (Squamata: Anguimorpha), J. Herpetol., 2002, vol. 36, no. 4, pp. 679–682.

    Article  Google Scholar 

  13. 13

    Norell, M.A. and Gao, K., Braincase and phylogenetic relationships of Estesia mongoliensis from the Late Cretaceous of the Gobi Desert and the recognition of a new clade of lizards, Am. Mus. Novit., 1997, no. 3211, pp. 1–25.

Download references


This study was supported by the Russian Foundation for Basic Research, project no. 16-05-00408.

Author information



Corresponding author

Correspondence to V. R. Alifanov.

Additional information

Translated by G. Rautian

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Alifanov, V.R. A New Platynotan Lizard (Parasaniwidae, Anguimorpha) from the Late Paleocene of Southern Mongolia. Paleontol. J. 52, 1432–1435 (2018). https://doi.org/10.1134/S0031030118120067

Download citation


  • Lizards
  • Parasaniwidae
  • Platynota
  • Anguimorpha
  • Late Paleocene
  • Mongolia
  • southern Gobi