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Strontium isotope evidence for the age of Eocene fossil whales of Kutch, western India

Published online by Cambridge University Press:  08 February 2010

VADLAMANI RAVIKANT  and
S. BAJPAI
VADLAMANI RAVIKANT*
Affiliation:
Institute Instrumentation Centre, Indian Institute of Technology, Roorkee-247667, India
S. BAJPAI
Affiliation:
Department of Earth Sciences, Indian Institute of Technology, Roorkee-247667, India
*
*Author for correspondence: [email protected]
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Abstract

The Indian subcontinent is widely considered to be the birthplace of whales (Cetacea), and the middle Eocene Harudi Formation of Kutch has long been known to be a major source of early whales. The Kutch cetaceans are of critical importance in understanding the evolutionary transition of whales from land to sea. Strontium isotope analysis of marine biogenic carbonates from the Harudi Formation was conducted to obtain a numerical age of the whale-bearing strata. Although the measured 87Sr/86Sr ratios (0.707742 to 0.707764) correspond to two distinct age clusters of 46–47.5 Ma or 41–42.5 Ma, we prefer the latter, late Lutetian, age cluster.

Keywords

strontium isotope stratigraphymolluscsCetaceaLutetianHarudi FormationKutch
Type
Rapid Communication
Information
Geological Magazine , Volume 147 , Issue 3 , May 2010 , pp. 473 - 477
Copyright
Copyright © Cambridge University Press 2010

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References

Bajpai, S., Domning, D. P., Das, D. P. & Mishra, V. P. 2009. A new middle Eocene sirenian (Mammalia, Protosirenidae) from India. Neues Jahrbuch für Geologie und Paläontologie 252, 257–67.CrossRefGoogle Scholar
Bajpai, S. & Thewissen, J. G. M. 1998. Middle Eocene cetaceans from the Harudi and Subathu formations of India. In The Emergence of Whales (ed. Thewissen, J. G. M.), pp. 213–33. New York: Plenum Publishing Corporation.CrossRefGoogle Scholar
Bajpai, S. & Thewissen, J. G. M. 2001. A new, diminutive Eocene whale from Kachchh (Gujarat, India) and its implications for locomotor evolution of cetaceans. Current Science 79 (10), 1478–82.Google Scholar
Bajpai, S., Thewissen, J. G. M., Kapur, V. V., Tiwari, B. N. & Sahni, A. 2006. Eocene and Oligocene sirenians (Mammalia) from Kachchh, India. The Journal of Vertebrate Paleontology 26 (2), 400–10.CrossRefGoogle Scholar
Banner, J. L. 2004. Radiogenic isotopes: systematics and applications to earth surface processes and chemical stratigraphy. Earth-Science Reviews 65, 141–94.CrossRefGoogle Scholar
Biswas, S. K. 1992. Tertiary biostratigraphy of Kutch. Journal of the Palaeontological Society of India 37, 1–29.Google Scholar
Burke, W. H., Denison, R. E., Hetherington, E. A., Koepnick, R. B., Nelson, H. F. & Otto, J. B. 1982. Variation of seawater 87Sr/86Sr throughout Phanerozoic time. Geology 10, 516–19.Google Scholar
Elderfield, H. 1986. Strontium isotope stratigraphy. Palaeogeography Palaeoclimatology Palaeoecology 57, 71–90.CrossRefGoogle Scholar
Gingerich, P. D., Arif, M., Bhatti, M. A., Anwar, M. & Sanders, W. J. 1997. Basilosaurus drazindai and Basiloterus hussaini, new Archaeoceti (Mammalia, Cetacea) from the middle Eocene Drazinda Formation, with a revised interpretation of ages of whale-bearing strata in the Kirthar Group of the Sulaiman Range, Punjab (Pakistan). Contributions from the Museum of Paleontology, University of Michigan 30, 55–81.Google Scholar
Gingerich, P. D., Arif, M. & Clyde, W. C. 1995. New archaeocetes (Mammalia, Cetacea) from the middle Eocene Domanda Formation of the Sulaiman Range, Punjab (Pakistan). Contributions from the Museum of Paleontology, University of Michigan 29, 291–330.Google Scholar
Gingerich, P. D., Arif, M. & Clyde, W. C. 1998. Middle Eocene stratigraphy and marine mammals (Cetacea and Sirenia) of the Sulaiman Range, Pakistan. Bulletin of Carnegie Museum of Natural History 34, 239–59.Google Scholar
Gingerich, P. D., Ul-Haq, M., Khan, I. H. & Zalmout, I. S. 2001. Eocene stratigraphy and archaeocete whales (Mammalia, Cetacea) of Drug Lahar in the Eastern Sulaiman range, Balochistan (Pakistan). Contributions from the Museum of Paleontology, University of Michigan 30, 269–319.Google Scholar
Gradstein, F. M. & Ogg, J. G. 2004. Geological Time Scale 2004 – why, how, and where next. Lethaia 37, 175–81.Google Scholar
Howarth, R. J. & McArthur, J. M. 1997. Statistics for strontium isotope stratigraphy: a robust LOWESS fit to the marine strontium isotope curve for the period 0 to 206 Ma, with look-up table for the derivation of numerical age. The Journal of Geology 105, 441–56.Google Scholar
Kumar, K. & Sahni, A. 1986. Remingtonocetus harudiensis, new combination, a middle Eocene archaeocete (Mammalia, Cetacea) from Western Kutch, India. Journal of Vertebrate Paleontology 6, 326–49.CrossRefGoogle Scholar
McArthur, J. M., Howarth, R. J. & Bailey, T. R. 2001. Strontium Isotope Stratigraphy: LOWESS Version 3: Best Fit to the Marine Sr–Isotope Curve for 0–509 Ma and accompanying look-up table for deriving numerical age. The Journal of Geology 109, 155–70.Google Scholar
Rai, J. 1997. Scanning-electron microscopic studies of the late middle Eocene (Bartonian) calcareous nannofossils from the Kutch Basin, western India. Journal of the Palaeontological Society of India 42, 147–67.Google Scholar
Sahni, A. &. Mishra, V. P. 1972. A new species of Protocetus (Cetacea) from the middle Eocene of Kutch, western India. Palaeontology 15, 490–5.Google Scholar
Sahni, A. & Mishra, V. P. 1975. Lower Tertiary vertebrates from Western India. Palaeontological Society of India, Monograph 3, 1–48.Google Scholar
Singh, P. & Singh, M. P. 1991. Nannofloral biostratigraphy of the late middle Eocene strata of Kachchh Region, Gujarat State, India. Geoscience Journal 12, 17–51.Google Scholar
Thewissen, J. G. M. & Bajpai, S. 2001. Whale origins as a poster child for macroevolution. Bioscience 51, 1017–29.CrossRefGoogle Scholar
Thewissen, J. G. M. & Bajpai, S. 2009. New skeletal material of Andrewsiphius and Kutchicetus, two Eocene cetaceans from India. Journal of Paleontology 83, 635–63.CrossRefGoogle Scholar
Thewissen, J. G. M. & Williams, E. 2002. The early evolution of Cetacea (whales, dolphins, and porpoises). Annual Review of Ecology and Systematics 33, 73–90.Google Scholar
Veizer, J. 1989. Strontium isotopes in seawater through time. Annual Reviews Earth and Planetary Science 17, 141–67.Google Scholar
Veizer, J., Ala, D., Azmy, K., Bruckschen, P., Buhl, D., Bruhn, F., Carden, G. A. F., Diener, A., Ebneth, S., Godderis, Y., Jasper, T., Korte, C., Pawelleck, F., Podlaha, O. & Strauss, H. 1999. 87Sr/86Sr, 13C and 18O evolution of Phanerozoic seawater. Chemical Geology 161, 59–88.CrossRefGoogle Scholar
Veizer, J., Buhl, D., Diener, A., Ebneth, S., Podlaha, O. G., Bruckschen, P., Jasper, T., Korte, C., Schaaf, M., Ala, D. & Azmy, K. 1997. Strontium isotope stratigraphy: potential resolution and event correlation. Palaeogeography Palaeoclimatology Palaeoecology 132, 65–77.CrossRefGoogle Scholar
Williams, E. 1998. Synoposis of the earliest cetaceans. In The Emergence of Whales (ed. Thewissen, J. G. M.), pp. 1–28. New York: Plenum Publishing Corporation.Google Scholar