DOI: 10.5061/dryad.kd51c5bht
title: Data from: Traces of phylogeny and ecology in hippocampal neuron numbers

description: The datasets contain hippocampal cell numbers and ecological variables
 used to investigate the evolution of the hippocampus and the ecological
 factors that are drivers of natural selection in the phylogenetic
 development of the hippocampus. The dataset on hippocampal cell numbers
 contains additional species, which due to specimen n &lt; 3 were not
 included in the analysis. In addition, the dataset on hippocampal cell
 numbers contains all sampling parameters, CE estimates and all other
 information on the specimens available to us (e.g., brain weights, body
 weights, sex). Interactive graphs permit species identification in 3D
 representations of phylogenetic principal components analyses (principal
 components 1 - 3) and species identification and exploration in the
 hippocampal morphospace. The R script that was used to analyse the data is
 provided.
description: The methods to collect the data are decribed in detail in the
 publication that this dataset accompanies. All neuron number estimates
 were generated using the Optical Fractionator, a design-based
 stereological method.
description: # Traces of evolution and Ecology in hippocampal cell numbers
 [https://doi.org/10.5061/dryad.kd51c5bht](https://doi.org/10.5061/dryad.kd51c5bht) ## Description of the data and file structure The hippocampal cell number data were generated to investigate the evolution of the hippocampal circuitry and the impact of ecological factor as drivers of natural selection during the phylogenetic development of the hippocampus. ### Files and variables #### File: EcoEvoHippo_Ecological_Factors.xlsx **Description:** This file contains the PanTHERIA ecological data used in the publication that this data accompanies. The sheet "data" contains the unformated variable values that were used for analysis. The data was extensively vetted. The sheet "data_annotated" specifies which of the variable values from PanTHERIA were corrected and which variable values were estimated because they were missing in PanTHERIA. Additional information on the variables and the references used to either correct PanTHERIA entries or to estimate variable values not contained in PanTHERIA can be found in the sheet "Read me References" of this file. ##### Variables * species * order * family * DietBreadth * HabitatBreadth * HomeRange * HomeRange_plus_estimate * SocialGrpSize * TropicLevel #### File: EcoEvoHippo_Neuron_Numbers_Hippocampus.xlsx **Description:** This file contains the neuron number data that was used in the publication that this data accompanies. In addition, it contains all other specimen data available to us and all data on the sampling schemes used to generate the cell number estimates. Additional information on the variables can be found in the sheet "read_me" of this file. ##### Variables * species_latin * id * data_source * common_name * order * family * used_in_this_study * brain_weight * brain_weight_plus_estimates * body_weight * body_weight_plus_estimates * age * age_category * sex * GC * GC_CE0 * GC_CA1 * GC_xy * GC_disector * GC_ssf * GC_sections_analyzed * GC_cells_counted * HIL * HIL_CE0 * HIL_CA1 * HIL_xy * HIL_disector * HIL_ssf * HIL_sections_analyzed * HIL_cells_counted * CA3 * CA3_CE0 * CA3_CA1 * CA3_xy * CA3_disector * CA3_ssf * CA3_sections_analyzed * CA3_cells_counted * CA1 * CA1_CE0 * CA1_CA1 * CA1_xy * CA1_disector * CA1_ssf * CA1_sections_analyzed * CA1_cells_counted * SUB * SUB_CE0 * SUB_CA1 * SUB_xy * SUB_disector * SUB_ssf * SUB_sections_analyzed * SUB_cells_counted * RB * RB_CE0 * RB_CA1 * RB_xy * RB_disector * RB_ssf * RB_sections_analyzed * RB_cells_counted ## Code/software Any software able to open xlsx files can be used to view the data. Formatting of the data should be compatible with R. Interactive 3D images (html format) must be opened using a web browser.