First tillodont from India: Additional evidence for an early Eocene faunal connection between Europe and India?

• Autorzy: Rose K D , Rana R.S. , Sahni A. , Kumar K. , Singh L. , Smith T.
• Języki publikacji: EN

Abstrakty

EN

Vastan Lignite Mine in southeastern Gujarat, India, produces the oldest known Cenozoic land−mammals and the only early Eocene continental vertebrate fauna known from India (e.g., Bajpai et al. 2005; Rana et al. 2005, 2008; Rose et al. 2006, 2008, 2009; Smith et al. 2007; Rage et al. 2008). The fauna comes from the Cambay Shale Formation and has been dated as middle Ypresian (~52 Ma, early Cuisian) based on a common nummulitid foraminiferan from about 15 m above the vertebrate−producing layer (Sahni et al. 2006; Rana et al. 2008). However, a recent study of dinoflagellate cysts from the section suggests that the deposits may be as old as 54–55 Ma (Garg et al. 2008). Although some elements of the fauna, such as anthracobunids and lagomorphs, have Asian affinities, a surprising number of taxa among the snakes, bats, insectivores, primates, rodents, and artiodactyls appear to be most closely related to early Eocene European or North American taxa. This may simply reflect the poor state of knowledge of contemporary south Asian vertebrate faunas; alternatively, it might be evidence of previously unsuspected early Eocene faunal exchange between Europe and southwest Asia. We report here two teeth of a tillodont from Vastan Mine, which constitute the first record of the mammalian order Tillodontia known from India. Despite the much greater generic diversity of tillodonts in Asia than elsewhere, the Vastan tillodont shows clear affinities with Euramerican esthonychines.

Słowa kluczowe

EN

paleontology; tillodont; India; Europe; Eocene; Paleocene; faunal connection; Cenozoic; mammal; Ypresian; anthracobunid; lagomorph; fauna

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2009
• Tom: 54
• Numer: 2
• Opis fizyczny: p.351-355,fig.,ref

Twórcy

autor

Rose K D

• Center for Functional Anatomy and Evolution, The Johns Hopkins University School of Medicine, 1830 E Monument St., Baltimore, 21205 USA

autor

Rana R.S.

autor

Sahni A.

autor

Kumar K.

autor

Singh L.

autor

Smith T.

Bibliografia

• Bajpai, S., Kapur, V.V., Das, D.P., Tiwari, B.N., Saravanan, N., and Sharma, R. 2005. Early Eocene land mammals from Vastan Lignite Mine, District Surat (Gujarat), western India. Journal of the Palaeontological Society of India 50: 101–113.
• Baudry, M. 1992. Les tillodontes (Mammalia) de l’Éocène inférieur de France. Bulletin du Muséum National d’Histoire Naturelle, Paris, 4e sér. 14: 205–243.
• Chow, M. and Wang, B. 1979. Relationship between the pantodonts and tillodonts and classification of the order Pantodonta. Vertebrata PalAsiatica 17: 37–48.
• Chow, M., Wang, J.−W., and Meng, J. 1996. A new species of Chungchienia (Tillodontia, Mammalia) from the Eocene of Lushi, China. American Museum Novitates 3171: 1–10.
• Garg, R., Khowaja−Ateequzzaman, Prasad, V., Tripathi, S.K.M., Singh, I.B., Jauhri, A.K., and Bajpai, S. 2008. Age−diagnostic dinoflagellate cysts from lignite−bearing sediments of the Vastan lignite mine, Surat District, Gujarat, western India. Journal of the Palaeontological Society of India 53: 99–105.
• Gazin, C.L. 1953. The Tillodontia: an early Tertiary order of mammals. Smithsonian Miscellaneous Collections 121 (10): 1–110.
• Gingerich, P.D. 1989. New earliest Wasatchian mammalian fauna from the Eocene of northwestern Wyoming: composition and diversity in a rarely sampled high−floodplain assemblage. University of Michigan Papers on Paleontology 28: 1–97.
• Gingerich, P.D. 2003. Stratigraphic and micropaleontological constraints on the middle Eocene age of the mammal−bearing Kuldana Formation of Pakistan. Journal of Vertebrate Paleontology 23: 643–651.
• Gingerich, P.D. and Gunnell, G.F. 1979. Systematics and evolution of the genus Esthonyx (Mammalia, Tillodontia) in the early Eocene of North America. Contributions from the Museum of Paleontology, The University of Michigan 25: 125–153.
• Gingerich, P.D., Arif, M., Khan, I.H., ul−Haq, M., Bloch, J.I., Clyde, W.C., and Gunnell, G.F. 2001. Gandhera Quarry, a unique mammalian faunal assemblage from the early Eocene of Baluchistan (Pakistan). In: G.F. Gunnell (ed.), Eocene Vertebrates: Unusual Occurrences and Rarely Sampled Habitats, 251–262. Plenum, New York.
• Gunnell, G.F., Gingerich, P.D., ul−Haq, M., Bloch, J.I., Khan, I.H., and Clyde, W.C. 2008. New euprimates (Mammalia) from the early and middle Eocene of Pakistan. Contributions from the Museum of Paleontology, The University of Michigan 32: 1–14.
• Huang, X.−S. and Zheng, J.−J. 1999. A new tillodont from the Paleocene of Nanxiong Basin, Guangdong. Vertebrata PalAsiatica 37 (2): 96–104.
• Huang, X.−S. and Zheng, J.−J. 2003. A tillodont−like mammal from the middle Paleocene of Qianshan Basin, Anhui, China. Vertebrata PalAsiatica 41 (2): 131–136.
• Lucas, S.G. 1993. Pantodonts, tillodonts, uintatheres, and pyrotheres are not ungulates.In: F.S. Szalay, M.J. Novacek, and M.C. McKenna (eds.), Mammal Phylogeny—Placentals, 182–194. Springer−Verlag, New York.
• Lucas, S.G. and Kondrashov, P.E. 2004. A new species of Deltatherium (Mammalia, Tillodontia) from the Paleocene of New Mexico. New Mexico Museum of Natural History and Science Bulletin 26: 45–53.
• Lucas, S.G. and Schoch, R.M. 1981. Basalina, a tillodont from the Eocene of Pakistan. Mitteilungen der Bayerischen Staatssammlung für Paläontologie und historische Geologie 21: 89–95.
• Lucas, S.G. and Schoch, R.M. 1998. Tillodontia.In: C.M. Janis, K.M. Scott, and L.L. Jacobs (eds.), Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals, 268–273. Cambridge University Press, Cambridge.
• McKenna, M.C. and Bell, S.K. 1997. Classification of Mammals Above the Species Level. 631 pp. Columbia University Press, New York.
• Miyata, K. and Tomida, Y. 1998. A new tillodont from the early middle Eocene of Japan and its implication to the subfamily Trogosinae (Tillodontia: Mammalia). Paleontological Research 2: 53–66.
• Nel, A., de Plöeg, G., Dejax, J., Dutheil, D., de Franceschi, D., Gheerbrant, E., Godinot, M., Hervet, S., Menier, J.−J., Augé, M., Bignot, G., Cavagnetto, C., Duffaud, S., Gaudant, J., Hua, S., Jossang, A., de Lapparent de Broin, F., Pozzi, J.−P., Paicheler, J.−C., Beuchet, F., and Rage, J.−C. 1999. Un gisement sparnacien exceptionnel à plantes, arthropodes et vertébrés (Éocène basal, MP7): Le Quesnoy (Oise, France). Comptes Rendus de l’Académie des Sciences de Paris, Sciences de la Terre et des Planètes 329: 65–72.
• Rage, J.−C., Folie, A., Rana, R.S., Singh, H., Rose, K.D., and Smith, T. 2008. A diverse snake fauna from the early Eocene of Vastan Lignite Mine, Gujarat, India. Acta Palaeontologica Polonica 53: 391–403.
• Rana, R.S., Kumar, K., Escarguel, G., Sahni, A., Rose, K.D., Smith, T., Singh, H., and Singh, L. 2008. An ailuravine rodent from the lower Eocene Cambay Formation at Vastan, western India, and its palaeobiogeographic implications. Acta Palaeontologica Polonica 53: 1–14.
• Rana, R.S., Singh, H., Sahni, A., Rose, K.D., and Saraswati, P.K. 2005. Early Eocene chiropterans from a new mammalian assemblage (Vastan Lignite Mine, Gujarat, Western Peninsular Margin): oldest known bats from Asia. Journal of the Palaeontological Society of India 50: 93–100.
• Rose, K.D. 1981. The Clarkforkian Land−Mammal Age and mammalian faunal composition across the Paleocene–Eocene boundary. University of Michigan Papers on Paleontology 26: 1–197.
• Rose, K.D. 2006. The Beginning of the Age of Mammals. 428 pp. Johns Hopkins University Press, Baltimore.
• Rose, K.D., DeLeon, V.B., Missiaen, P., Rana, R.S., Sahni, A., Singh, L., and Smith, T. 2008. Early Eocene lagomorph (Mammalia) from western India and the early diversification of Lagomorpha. Proceedings of the Royal Society of London B 275: 1203–1208.
• Rose, K.D., Rana, R.S., Sahni, A., Kumar, K., Missiaen, P., Singh, L., and Smith, T. 2009. Early Eocene primates from Gujarat, India. Journal of Human Evolution 56: 366–404.
• Rose, K.D., Smith, T., Rana, R.S., Sahni, A., Singh, H., Missiaen, P., and Folie, A. 2006. Early Eocene (Ypresian) continental vertebrate assemblage from India, with description of a new anthracobunid (Mammalia, Tethytheria). Journal of Vertebrate Paleontology 26: 219–225.
• Sahni, A., Saraswati, P.K., Rana, R.S., Kumar, K., Singh, H., Alimohammadian, H., Sahni, N., Rose, K.D., Singh, L., and Smith, T. 2006. Temporal constraints and depositional palaeoenvironments of the Vastan Lignite Sequence, Gujarat: analogy for the Cambay Shale hydrocarbon source rock. Indian Journal of Petroleum Geology 15: 1–20.
• Smith, T., Rana, R.S., Missiaen, P., Rose, K.D., Sahni, A., Singh, H., and Singh, L. 2007. Highest diversity of earliest bats in the Early Eocene of India. Naturwissenschaften 94: 1003–1009.
• Stucky, R.K. and Krishtalka, L. 1983. Revision of the Wind River faunas, early Eocene of central Wyoming. Part 4. The Tillodontia. Annals of Carnegie Museum 52: 375–391.
• Ting, S. and J. Zheng. 1989. The affinities of Interogale and Anchilestes and the origin of Tillodontia. Vertebrata PalAsiatica 27: 77–86.
• Tong, Y.−S. and Wang, J.−W. 2006. Fossil mammals from the early Eocene Wutu Formation of Shandong Province. Palaeontologia Sinica 192, new series C (28): 1–195.
• Tong, Y.−S., Wang, J.−W., and Fu, J.−F. 2003. Yuesthonyx, a new tillodont (Mammalia) from the Paleocene of Henan. Vertebrata PalAsiatica 41: 55–65.
• Wang, Y.−Q. and Jin, X. 2004. A new Paleocene tillodont (Tillodontia, Mammalia) from Qianshan, Anhui, with a review of Paleocene tillodonts from China. Vertebrata PalAsiatica 42 (1): 13–26.