Taxataxi cross references datasets from iNaturalist and NPSpecies. Observations in iNaturalist are cross-referenced with NPSpecies for the national park unit in which the observation was made, to identify which species observed and documented in iNaturalist are and are not on NPSpecies list for the park in which the observations were made. Taxataxi helps with taxonomy issues by calling in taxonomic synonyms, to determine where species may be the same but under different species names.
Development version, from GitHub
library("devtools")
devtools::install_github("vijaybarve/taxataxi")
library("taxataxi")