Tethys Seaway

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From:
STEEMAN, M.E., M.B. HEBSGAARD, R.E. FORDYCE, S.Y.W. HO, D.L. RABOSKY, R. NIELSEN, C. RAHBEK, H. GLENNER, M.V. SORENSEN, E. WILLERSLEV. 2009. Radiation of extant cetaceans driven by restructuring of the oceans. Systematic Biology 58(6):573-585.