Ailurarctos

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File:Ailurarctos left radial sesamoid fossil.webp
Ailurarctos left radial sesamoid fossil.

Ailurarctos ("cat bear") is an extinct genus of panda from the Late Miocene of China, some 8 million years ago.[1][2][3][4]

Different teeth structures in the Ailuropoda lineage indicate a mosaic evolution during the past 2 million years.[5] Like modern giant pandas, Ailurarctos had a false thumb that allowed it to grip bamboo, suggesting that the panda's specialized bamboo diet goes back to as early as 6 to 7 million years ago.[6]

References

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  6. Wang, X., Su, D.F., Jablonski, N.G. et al. Earliest giant panda false thumb suggests conflicting demands for locomotion and feeding. Sci Rep 12, 10538 (2022). https://doi.org/10.1038/s41598-022-13402-y

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