Evidence for increased animal pollination during the Paleocene-Eocene Thermal Maximum

The Paleocene-Eocene Thermal Maximum (PETM) was the largest early Cenozoic hyperthermal event, one of a series of carbon cycle and climate perturbations marked by massive releases of carbon into the atmosphere and spikes in global temperature. Previous studies have documented major changes in the composition of terrestrial plant and animal communities during the PETM, as well as changes in arthropod herbivory. Here we examine possible changes in pollination mode during the PETM in the Bighorn Basin, Wyoming, USA, as inferred from three lines of evidence: (1) the prevalence of fossil pollen preserved as clumps, (2) the pollination mode of nearest living relatives (NLR), and (3) angiosperm pollen morphological diversity. These suggest animal pollination became more common and wind pollination less common during the PETM. The decrease in wind pollination during the PETM reflects the basin-scale extirpation of wind-pollinated lineages and their replacement by dominantly animal-pollinated li..., , # Evidence for increased animal pollination during the Paleocene-Eocene Thermal Maximum

Dataset DOI: [10.5061/dryad.k0p2ngfkb](10.5061/dryad.k0p2ngfkb)

## Description of the data and file structure

**Summary of dataset contents:**

**Table S1** – Sample information for each locality. This includes:

| **VARIABLE** | **DEFINTION** | **UNIT** |
| :------------------------------ | :------------------------------------------------------------------------------------------------------------------------------- | :---------------- |
| Locality | Name of sample site | NA |
| Equivalent localities | Equivalent name of sample site ...,