Aquatic sloths (Thalassocnus) from the Miocene of Chile and the evolution of marine mammal herbivory in the Pacific Ocean The evolution of marine mammals in South America includes unique and extinct lineages found nowhere else in the world, such as the walrus-convergent whale Odobenocetops and multiple aquatic sloth spec...

These differences may be due to variations in seafloor productivity, and/or physiological differences between #desmostylians, #sirenians and #sloths.
To learn more make sure to check out our paper and its many figures: peerj.com/articles/198...
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