Data from: Local and global abundance associated with extinction risk in late Paleozoic and early Mesozoic gastropods

Jonathan L. Payne, Sarah Truebe, Alexander Nützel & Ellen T. Chang
Ecological theory predicts an inverse association between population size and extinction risk, but most previous paleontological studies have not confirmed this relationship. The reasons for this discrepancy between theory and observation remain poorly understood. In this study, we compiled a global database of gastropod occurrences and collection-level abundances spanning the Early Permian through Early Jurassic (Pliensbachian). Globally, the database contains 5469 occurrences of 496 genera and 2156 species from 839 localities. Within the database, 30...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?