Functional stasis and changing habitat preferences among mammalian communities from the PETM of the Bighorn Basin, Wyoming.

Across all species, mean environmental preferences also appear to change significantly between time bins along both NMDS coordinates ( Figure 4g ), with ANOVA results showing highly significant (p < 0.0005) Mann–Whitney pairwise differences in both NMDS values among all time bins with the exception the Wasatchian 0 and 1/2 time bins, which could be differentiated along NMDS coordinate 1, but not along NMDS coordinate 2 ( p = 0.6636); these trends appear the same when means for each time bin are calculated only from taxa whose first occurrences fall within that time bin ( Figure 4i – j ).

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