Fig. S1.

Number of mollusk species in our sample assigned to the different extinction risk categories: (A) following IUCN criteria; (B) following our assessment; and (C) following the model prediction. The IUCN categories are simplified in this figure such that endangered includes the categories critically endangered, endangered, and vulnerable, and extant includes the categories least concern and near threatened. Color coding of the model assessments are graded to reflect the probabilistic nature of the assessments.