On peaceful science I saw where someone posted about the Antarctic basilosaurid at 49 mya. That’s the press release. The paper ended up dating it at 40-46mya which is consistent with other basilosaurids worldwide. Basilosaurus is my state fossil and the centerpiece of the museum where I do some work. I’ve spent quite a bit of time on them. Including private discussions with Hans Thewissen about that very specimen
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