Abstract
The oldest representative of the family Entelodontidae (suborder Suiformes), Proentelodon minutus gen. et sp. nov, is described from the Middle Eocene Khaichin Ula II Fauna in Mongolia. In addition to the genus Proentelodon, the new subfamily Proentelodontinae includes the genus Eoentelodon from the Middle-Upper Eocene of China, Mongolia, and Kazakhstan. The new data bring clues to the origin and systematic position of Entelodontidae, features of their evolution, dispersal, and changes in taxonomic diversity. They also elucidate the early evolutionary stages of Suiformes.
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References
P. A. Aubekerova, “New Representatives of the family Entelodontidae,” Izv. Akad. Nauk Kaz. SSR, Ser. Biol., No. 4, 47–52 (1969).
M. D. Biryukov, “Entelodons (Entelodontidae) from the Middle Oligocene Beds of the Upper Reaches of Zhilanshik,” in Materials of the History of the Fauna and Flora of Kazakhstan (Akad. Nauk Kaz. SSR, Alma-Ata, 1961), Vol. 3, pp. 11–19 [in Russian].
C. Blondel, “Les ongulès a la limite Eocéne/Oligocéne et an cours de l’Oligocéne en Europe occidentale: analyses faunistiques, morphoanatomiques et biogéochimiques (δ13C, δ18O); Implication sur le reconstitution des paleoenvironnements,” These D. Montpellier (Univ. Montpellier II, 1996).
B. Bohlin, “The Function of the Malar Processes in the Entelodonta,” Bull. Geol. Inst. Uppsala 30, 57–65 (1941).
M. Brunet, Les grands mammiféres ches de file de l’immigration Oligocéne et le probléme de la limite éocéne-Oligocéne en Europe (Singer-Polignac, Paris, 1979).
R. L. Carroll, Vertebrate Paleontology and Evolution (Freeman, New York, 1988).
M. Chow, “Eoentelodon—a New Primitive Entelodon from the Eocene of Lunan, Yunnan,” Vertebr. Palasiat. 2(1), 30–34 (1958).
D. Dashzeveg, “Entelodon orientalis n. sp. (Suiformes) from the Oligocene of the Gobi Desert, Mongolia,” Acta Palaentol. Polon. 10(2), 281–285 (1965).
D. Dashzeveg, “New Data on Entelodontidae (Artiodactyla, Suiformes) from the Oligocene of Mongolia,” in Paleontology and Biostratigraphy of Mongolia (Nauka, Moscow, 1976), pp. 47–50 [in Russian].
J. A. Effinger, Entelodontidae, in Evoluition of Tertiary Mammals of Northern America (Cambridge Univ. Press, Cambridge, 1998), Vol. 1, pp. 375–380.
R. J. Emry, S. G. Lucas, and B. V. Bayshashov, “Early Oligocene Entelodont from the Zaysan Basin, East Kazakhstan,” Selevinia 3(2), 3–7 (1995).
R. J. Emry, S. G. Lucas, L. Tyutkova, and B. Wang, “The Ergilian-Shandgolian (Eocene-Oligocene) Transition in the Zaisan Basin, Kazakhstan,” Bull. Carnegie Mus. Natur. Hist. 34, 298–312 (1998).
K. K. Flerov, “Mode of Life and Morphological Adaptations in the Evolution of Ungulates,” in Materials of the Evolution of Ungulates (Nauka, Moscow, 1970), pp. 63–70 [in Russian].
Fundamentals of Paleontology: Mammals (Gos. Nauchno-Tekhn. Izd. Lit. Geol. Okhr. Prir., Moscow, 1962) [in Russian].
L. K. Gabunia, The Benarskaya Fauna of Oligocene Vertebrates (Metsniereba, Tbilisi, 1964) [in Russian].
L. K. Gabuniya, A. A. Gureev, M. B. Efimov, et al., “Paleogene Fauna of the Zaisan Depression,” Tr. VSEGEI, Nov, Ser. 322, 98–115 (1983).
A. W. Gentry and J. J. Hooker, “The Phylogeny of the Artiodactyla,” in The Phylogeny and Classification of the Tetrapods (Clarendon, Oxford, 1988), Vol. 2, pp. 235–272.
Ch. Hu, “Archaeotherium ordosius from Oligocene of Inner Mongolia,” Vertebr. Palasiat. 8(3), 312–315 (1964).
Ch. M. Janis, J. D. Archibald, R. L. Cifelli, et al., “Archaic Ungulates and Ungulatelike Mammals,” in Evoluition of Tertiary Mammals of Northern America (Cambridge Univ. Press, Cambridge, 1998), Vol. 1, pp. 247–259.
R. M. Joeckel, “A Functional Interpretation of the Masticatory System and Paleoecology of Entelodonts,” Paleobiology 16(4), 459–482 (1990).
W. O. Kowalevsky, “Osteologie of Two Fossil Ungulate Species from Entelodon and Gelocus aymardi,” Proc. Soc. Natur. Anthrop. Ethnogr 16, 1–59 (1875).
S. G. Lucas and R. J. Emry, “Late Eocene Entelodonts (Mammalia, Artiodactyla) from Inner Mongolia, China,” Proc. Biol. Soc. Washington 109, 397–405 (1996).
W. Marinelli, “Untersuchungen über die Function des Gebisses der Entelodontiden,” Paleontol. Z. 6, 25–42 (1924).
W. Matthew, “Reclassification of the Artiodactyl Families,” Geol.-Mar. Lett. 40, 403–408 (1929).
W. Matthew, “A Phylogenetic Chart of the Artiodactyla,” J. Mammal. 15, 207–209 (1934).
W. Matthew and W. Granger, “The Fauna of the Houldjin Gravels,” Am. Mus. Novit., No. 97, 1–6 (1923).
W. Matthew and W. Granger, “New Mammals from the Irdin Manha Eocene of Mongolia,” Am. Mus. Novit., No. 198, 1–10 (1925).
M. C. McKenna and S. K. Bell, Classification of Mammals Above the Species Level (Columbia Univ. Press, New York, 1997).
O. A. Peterson, “A Revision of the Entelodontidae,” Mem. Carnegie Mus. 4(3), 41–158 (1909).
D. R. Prothero, E. M. Manning, and M. Fischer, “The Phylogeny of the Ungulates,” in The Phylogeny and Classification of the Tetrapods (Clarendon, Oxford, 1988), Vol. 2, pp. 201–234.
A. P. Rasnitsyn, “Evolutionary Rates and the Evolutionary Theory (Hypothesis of the Adaptive Compromise),” in Selected Works on the Evolutionary Biology (KMK, Moscow, 2005), pp. 27–47 [in Russian].
W. B. Scott, “The Mammalian Fauna of the White River Oligocene,” Trans. Am. Phil. Soc. New. Ser. 28, 1–746 (1940).
G. G. Simpson, “The Principles of Classification and a Classification of Mammals,” Bull. Am. Mus. Natur. Hist. 85, 1–350 (1945).
W. J. Sinclair, “Entelodonts from the Big Badlands of South Dacota,” Proc. Am. Phil. Soc. 60, 467–495 (1921).
J. Sudre, “Le Garouillas et les sites contemporains (Oligocene, MP 25) des phosphorites du Quercy (Lot, Tarn-Et-Garonne, France) et leurs faunes de vertébrés,” Palaeontogr. A 236(1–6), 205–256 (1995).
Y. Tong and J. Wang, “A Preliminary Report on the Early Eocene Mammals of the Wutu Fauna, Shandong Province, China,” Bull. Carnegie Mus. Natur. Hist. 34, 186–193 (1998).
Y. Tong and J. Wang, “Fossil Mammals from the Early Eocene Wutu Formation of Shandong Province,” Palaeontol. Sin. 28, 1–195 (2006).
B. A. Trofimov, “New Entelodontids from Mongolia and Kazakhstan,” Tr. Paleontol. Inst. Akad. Nauk SSSR 41, 144–154 (1952).
B. A. Trofimov, “On Renaming of the Entelodon Brashuodon Trofimov, 1952 into Ergilobia nom. nov,” in Materials to the “Fundamentals of Paleontology” (Moscow, 1958), Vol. 2, p. 119 [in Russian].
E. L. Troxell, “Entelodonts in the Marsh Collection,” Am. J. Sci. Ser. 50, 375 (1920).
I. A. Vislobokova, “Artiodactyls from the Middle Eocene of Khaichin Ula II, Mongolia,” Paleontol. Zh., No. 1, 85–90 (2004a) [Paleontol. J. 38, 90–96 (2004a)].
I. A. Vislobokova, “A New Representative of the Family Raoellidae (Suiformes) from the Middle Eocene of Khaichin-Ula 2, Mongolia,” Paleontol. Zh., No. 2, 102–107 (2004b) [Paleontol. J. 38, 220–226 (2004b)].
Y. Xu and Ch. Chu, “Early Tertiary Mammalian Fossils from Lunan, Yunnan,” Vertebr. Palasiat. 6(4), 319–320 (1962).
Ch. Young and M. Chow, “Some Oligocene Mammals from Lingwu, N. Kansu,” Acta Palaeontol. Sin. 4(4), 447–459 (1956).
Y. Zhang, W. Huang, T. Tang, et al., “The Cenozoic of the Lantian Province,” Mem. Inst. Vertebr. Paleontol. Palaeoanthropol. 14, 1–64 (1978).
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Original Russian Text © I.A. Vislobokova, 2008, published in Paleontologicheskii Zhurnal, 2008, No. 6, pp. 69–80.
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Vislobokova, I.A. The oldest representative of Entelodontoidea (Artiodactyla, Suiformes) from the Middle Eocene of Khaichin Ula II, Mongolia, and some evolutionary features of this superfamily. Paleontol. J. 42, 643–654 (2008). https://doi.org/10.1134/S0031030108060105
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DOI: https://doi.org/10.1134/S0031030108060105