Unique functional diversity during early Cenozoic mammal radiation of North America

Mammals influence nearly all aspects of energy flow and habitat structure in modern terrestrial ecosystems. However, anthropogenic effects likely have altered mammalian community structure, raising the question of how past perturbations have done so. We use functional diversity to describe how the structure of North American mammal communities changes over the past 66 Ma, an interval spanning the rebound radiation following the K/Pg and several subsequent environmental disruptions including the PETM, the expansion of grassland, and the onset of Pleistocene glaciation. For 264 fossil communities, we examine three aspects of ecological function: functional evenness, functional richness, and functional divergence. Shifts in functional diversity are significantly related to major ecological and environmental transitions. All three measures of functional diversity increase immediately following the extinction of the non-avian dinosaurs, suggesting that high degrees of ecological disturbance ..., Mammal occurrences were collected using the primary literature and paleobiology database. Mammal trait data was gathered from primary literature and various online databases including the paleobiology database and NOW database. All traits and occurrrences have a citation. All locality data information is available in a csv file. Dates were refined using the primary literature and all citations are provided in the document. I have the database attached as a csv file. , , # North American Cenozoic Mammal Traits

This dataset includes information on fossil localities and mammal traits. The fossil localities and mammal occurrence data were collected from the Paleobiology Database ([https://paleobiodb.org](https://paleobiodb.org)). Some locality dates were refined using the primary literature. The sources and information gathered for this process are included in the other datafile located on my Github (see link below) called \"Locality_Date_Refinement\".

The sources of each trait is listed as \"Ref\". Some may contain multiple sources. The \"Other Sources\" column was added when further sources were collected to infer traits of a species. The column \"Alternative_Name\" reflects another name the species may have been identified as in other databases where trait data was collected.

## Description of the Data and file structure

#### **CSV File Name: Datafile4\_PrimaryReference\_FDNA.csv**

\**Description of file: This file contains information downloaded from the ...