Possible Phylogenetic Relationship of Asiatic Eurymylids and Rodents, with Comments on Mimotonids

  • Li Chuan-kuei
  • Ting Su-yin
Conference paper
Part of the NATO Advanced Science Institutes (ASI) Series book series (NSSA, volume 92)


The puzzling genus Eurymylus, from the latest Paleocene of the Gashato Formation, Mongolia, has been a subject of great scientific interest from the time of its original description (Matthew and Granger, 1925; Matthew et al., 1929). Despite the discovery of additional specimens (Sych, 1971), however, no consensus has been reached on the possible systematic affinities of eurymylids with rodents, lagomorphs, pseudictopids, zalambdalestids, anagalids, or leptictids (Wood, 1942; Van Valen, 1964; Szalay and McKenna, 1971; Sych, 1971; Hartenberger, 1977).


Middle Eocene Coronoid Process Cheek Tooth Dental Formula Infraorbital Canal 
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  1. Bohlin, B. 1951. Some mammalian remains from Shih-ehr-ma-ch’eng, Hui-hui-p’u area, Western Kansu. Rep. Sino-Swedish Exped. N. W. Prov. China 35, Vert. Palaeont. 5: 1–47.Google Scholar
  2. Butler, P. M. 1980. Functional aspects of the evolution of rodent molars. Palaeovertebrata, Mém. Jubil. R. Lavocat: 249-262.Google Scholar
  3. Chaline, J. and Mein, P. 1979. Les Rongeurs et l’Evolution. Doin Editeurs, Paris.Google Scholar
  4. Crompton, A. W. 1971. The origin of the tribosphenic molar. Zool. J. Linn. Soc. 50(Suppl. 1): 65–87.Google Scholar
  5. Dawson, M. R. 1967. Lagomorph history and the stratigraphic record. Univ. Kansas Dept. Geol. Spec. Publ. 2: 287–316.Google Scholar
  6. Dawson, M. R., Li, C.-K. and Qi, T. 1984. Eocene ctenodactyloid rodents (Mammalia) of Eastern and Central Asia. Carneg. Mus. Nat. Hist. Spec. Publ. 9: 138–150.Google Scholar
  7. Evans, F. G. 1942. The osteology and relationships of the elephant shrews (Macroscelididae). Bull. Amer. Mus. Nat. Hist. 80: 85–125.Google Scholar
  8. Gidley, J. W. 1912. The lagomorphs an independent order. Science 36: 285–286.PubMedCrossRefGoogle Scholar
  9. Gingerich, P. D. and Gunnell, G. F. 1979. Systematics and evolution of the genus Esthonyx (Mammalia, Tillodontia) in the early Eocene of North America. Contrib. Mus. Paleont., Univ. Mich. 25: 125–153.Google Scholar
  10. Hartenberger, J.-L. 1977. A propos de l’origine des Rongeurs. Géobios, Mém. Spéc. 1: 183–193.CrossRefGoogle Scholar
  11. Hartenberger, J.-L. 1980. Données et hypothèses sur la radiation initiale des Rongeurs. Palaeovertebrata, Mém. Jubil. R. Lavocat: 285-301.Google Scholar
  12. Kielan-Jaworowska, Z. 1969. Results of the Polish-Mongolian Palaeontological Expeditions. Part I. Preliminary data on the Upper Cretaceous eutherian mammals from Bayn Dzak, Gobi Desert. Palaeont. Pol. 19: 171–197.Google Scholar
  13. Kielan-Jaworowska, Z. 1975. Preliminary description of two new eutherian genera from the Late Cretaceous of Mongolia. Palaeont. Pol. 33: 5–16.Google Scholar
  14. Kielan-Jaworowska, Z. 1978. Evolution of the therian mammals in the Late Cretaceous of Asia. Part III. Postcranial skeleton in Zalambdalestidae. Palaeont. Pol. 38: 3–41.Google Scholar
  15. Kielan-Jaworowska, Z. 1981. Evolution of the therian mammals in the Late Cretaceous of Asia. Part IV. Skull structure in Kennalestes and Asioryctes. Palaeont. Pol. 42: 25–78.Google Scholar
  16. Kielan-Jaworowska, Z., Bown, T. M. and Lillegraven, J. A. 1979. Eutheria. In: Mesozoic Mammals, J. A. Lillegraven, Z. Kielan-Jaworowska and W. A. Clemens, eds., pp. 221–258, Univ. Calif. Press, Berkeley.Google Scholar
  17. Kielan-Jaworowska, Z. and Trofimov, B. A. 1980. Cranial morphology of the Cretaceous eutherian mammal Barunlestes. Acta Palaeont. Pol. 25: 167–185.Google Scholar
  18. Krause, D. W. 1982. Jaw movement, dental function, and diet in the Paleocene multituberculate Ptilodus. Paleobiology 8: 265–281.Google Scholar
  19. Li, C.-K. 1977. Paleocene eurymyloids (Anagalida, Mammalia) of Qianshan, Anhui. Vert. PalAsiat. 15: 103–118.Google Scholar
  20. Li, C.-K., Chiu, C.-S., Yan, D.-F. and Hsieh, S.-H. 1979. Notes on some Early Eocene mammalian fossils of Hengtung, Hunan. Vert. PalAsiat. 17: 71–80.Google Scholar
  21. Li, C.-K., Wilson, R. W. and Dawson, M. R. In press. The origin of rodents and lagomorphs. J. Mammal.Google Scholar
  22. Li, C.-K. and Yan, D.-F. 1979. Notes on the systematic position of eurymyloids and the origin of Rodentia. 12th Ann. Rep. Pal. Soc. China: 155-156. (In Chinese)Google Scholar
  23. Matthew, W. D. and Granger, W. 1925. Fauna and correlation of the Gashato Formation of Mongolia. Amer. Mus. Novit. 189: 1–12.Google Scholar
  24. Matthew, W. D., Granger, W. and Simpson, G. G. 1929. Additions to the fauna of the Gashato Formation of Mongolia. Amer. Mus. Novit. 376: 1–12.Google Scholar
  25. McKenna, M. C. 1961. A note on the origin of rodents. Amer. Mus. Novit. 2037: 1–5.Google Scholar
  26. McKenna, M. C. 1963. New evidence against tupaioid affinities of the mammaliam family Anagalidae. Amer. Mus. Novit. 2158: 1–16.Google Scholar
  27. McKenna, M. C. 1975. Toward a phylogenetic classification of the Mammalia. In: Phylogeny of Primates, W. P. Luckett and F. S. Szalay, eds., pp. 21–46, Plenum Press, New York.CrossRefGoogle Scholar
  28. McKenna, M. C. 1982. Lagomorph interrelationships. Géobios Mém. Spéc. 6: 213–223.CrossRefGoogle Scholar
  29. Novacek, M. J. 1977. A review of Paleocene and Eocene Leptictidae (Eutheria: Mammalia) from North America. Paleobios 24: 1–42.Google Scholar
  30. Novacek, M. J. 1980. Cranioskeletal features in tupaiids and selected Eutheria as phylogenetic evidence. In: Comparative Biology and Evolutionary Relationships of Tree Shrews, W. P. Luckett, ed., pp. 35–93, Plenum Press, New York.CrossRefGoogle Scholar
  31. Patterson, B. and Wood, A. E. 1982. Rodents from the Deseadan Oligocene of Bolivia and the relationships of the Caviomorpha. Bull. Mus. Comp. Zool. 149: 371–543.Google Scholar
  32. Russell, L. S. 1959. The dentition of rabbits and the origin of the Lagomorpha. Bull. Natl. Mus. Canada 166: 41–45.Google Scholar
  33. Shevyreva, N. S. 1975. New data on the vertebrate fauna of Gashato Formation (Mongolia People’s Republic). Bull. Acad. Sci. Georgian SSR 77: 225–228.Google Scholar
  34. Simpson, G. G. 1931. A new insectivore from the Oligocene, Ulan Gochu Horizon, of Mongolia. Amer. Mus. Novit. 505: 1–22.Google Scholar
  35. Simpson, G. G. 1945. The principles of classification and a classification of mammals. Bull. Amer. Mus. Nat. Hist. 85: 1–350.Google Scholar
  36. Stehlin, H. G. and Schaub, S. 1951. Die Trigonodontie der simplicidentaten Nager. Schweiz. Pal. Abh. 67: 1–385.Google Scholar
  37. Sulimski, A. 1969. Paleocene genus Pseudictops Matthew, Granger and Simpson 1929 (Mammalia) and its revision. Palaeont. Pol. 19: 101–129.Google Scholar
  38. Sych, L. 1971. Mixodontia, a new order of mammals from the Paleocene of Mongolia. Palaeont. Pol. 25: 147–158.Google Scholar
  39. Szalay, F. S. 1971. Cranium of the Late Paleocene primate Plesiadapis tricuspidens. Nature 230: 324–325.PubMedCrossRefGoogle Scholar
  40. Szalay, F. S. 1977. Phylogenetic relationships and a classification of the eutherian Mammalia. In: Major Patterns in Vertebrate Evolution, M. K. Hecht, P. C. Goody and B. M. Hecht, eds., pp. 315–374, Plenum Press, New York.CrossRefGoogle Scholar
  41. Szalay, F. S. and McKenna, M. C. 1971. Beginning of the age of mammals in Asia: the Late Paleocene Gashato Fauna, Mongolia. Bull. Amer. Mus. Nat. Hist. 144: 269–318.Google Scholar
  42. Ting, S.-Y. and Li, C.-K. 1984. The structure of the ear region of Rhombomylus (Anagalida, Mammalia). Vert. PalAsiat. 22: 92–102.Google Scholar
  43. Van Valen, L. 1964. A possible origin for rabbits. Evolution 18: 484–491.CrossRefGoogle Scholar
  44. Wahlert, J. H. 1974. The cranial foramina of protrogomorphous rodents: an anatomical and phylogenetic study. Bull. Mus. Comp. Zool. 146: 363–410.Google Scholar
  45. Wood, A. E. 1940. The mammalian fauna of the White River Oligocene. Part III. Lagomorpha. Trans. Amer. Phil. Soc. 28: 271–362.CrossRefGoogle Scholar
  46. Wood, A. E. 1942. Notes on the Paleocene lagomorph, Eurymylus. Amer. Mus. Novit. 1162: 1–7.Google Scholar
  47. Wood, A. E. 1957. What, if anything, is a rabbit? Evolution 11: 417–425.CrossRefGoogle Scholar
  48. Wood, A. E. 1962. The early Tertiary rodents of the family Paramyidae. Trans. Amer. Phil. Soc. 52: 1–261.CrossRefGoogle Scholar
  49. Wood, A. E. 1965. Grades and clades among rodents. Evolution 19: 115–130.CrossRefGoogle Scholar
  50. Zhai, R.-J. 1977. Supplementary remarks on the age of Changxindian Formation. Vert. PalAsiat. 15: 173–176.Google Scholar
  51. Zhai, R.-J. 1978. More fossil evidences favouring an Early Eocene connection between Asia and Neoarctic. Mem. Inst. Vert. Pal. Paleoanthrop. 13: 107–115.Google Scholar

Copyright information

© Springer Science+Business Media New York 1985

Authors and Affiliations

  • Li Chuan-kuei
    • 1
  • Ting Su-yin
    • 1
  1. 1.Institute of Vertebrate Paleontology and PaleoanthropologyAcademia SinicaBeijingPeople’s Republic of China

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