Position of fetus suggests that early whales gave birth on land.
References
Gingerich, P. D. et al. PLoS ONE doi:10.1371/journal.pone.0004366 (2009).
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Kwok, R. Fossil of pregnant whale found. Nature (2009). https://doi.org/10.1038/news.2009.77
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DOI: https://doi.org/10.1038/news.2009.77
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