Origins and diversification of the Caatinga dry forest endemic avifauna

Understanding the geographic origin of lineages is crucial for comprehending their biogeographical and evolutionary histories, as well as the historical connections among biomes. In northeastern Brazil, the Caatinga dry forest represents the largest and most biologically diverse patch of Seasonally Dry Tropical Forest in the Neotropics. Here, using the endemic avian taxa of the Caatinga, we aim to i) infer their biogeographical origins and timing of diversification, ii) investigate the relationships with taxa from other Neotropical domains, and iii) understand the processes driving the evolution and diversification of the Caatinga endemic avifauna. We obtained previously published calibrated phylogenies of 40 bird species endemic to the Caatinga to reconstruct their ancestral geographic ranges through the R package BioGeoBEARS to infer and highlight the origins, mode, and tempo of evolution of the Caatinga avian endemics. Our results suggest that most avian endemics (21 taxa) are r..., , # Data from: Origins and diversification of the Caatinga dry forest endemic avifauna Dataset DOI: [10.5061/dryad.1zcrjdg45](10.5061/dryad.1zcrjdg45) ## Description of the data and file structure This dataset includes the files used for the biogeographic analyses of the article mentioned above (.csv file), as well as the results obtained in the biogeographic inferences obtained through BioGeoBEARS that were not included in the main document (.docx file). ### Files and variables #### File: Biogeografical-areas-classification.csv **Description:**Â Classification of current occurrence areas for each of the taxa used in the BioGeoBEARS analyses * **Code **=Â Acronym/letter used in the maps and BioGeoBEARS analyses corresponding to the nine biogeographic areas used. * **Regions** used the biogeographic area corresponding to the acronyms. * **Phylogeny =** Phylogeny used for species set. * **Species ==** Species used in the BioGeoBEARS analyses. * **Z / F / T/ A / E / S / R / M / P..., ,