From: Origin and global diversification patterns of tropical rain forests: inferences from a complete genus-level phylogeny of palms
Fossil name
Hard lower bound (Ma)
Soft upper bound 95% (Ma)
Exponential mean (uncertainty)
Sabalites carolinensis
85.8
88.8
1
Mauritiidites
65
69.49
1.5
Attaleinae
54.8
60.79
2
Hyphaene kapelmanii
27
28.5
0.5