Amphibian taxonomy: early 21st century case studies

These are data files associated with the editorial for 'Amphibian taxonomy: Early 21st century case studies' in Journal of Natural History (Streicher et al. 2020). In this special issue, eleven new species are described (nine frogs and two salamanders) and several revisionary actions are taken. There are contributions dealing with taxa from Africa (including Tanzania and Madagascar, Greenwood et al. 2020; Rancilhac et al. 2020), Asia (Mahony et al. 2020; Nguyen et al. 2020a; Nguyen et al. 2020b; Stuart et al. 2020), North America (Guyer et al. 2020), and South America (Melo-Sampaio et al. 2020). To create context for methods used in the special issue, we collected and summarised data from five years of new species descriptions (2015-2019).