Data of historical amphibian samples used in this study.

Shaded cells for latitude/longitude indicate that data have been added or modified based on detailed verbatim locality data. Taxonomy was changed to follow AmphibiaWeb (www.amphibiaweb.org). Under preservation type, the preservatives used for specimen preparation followed by that used for storage are given. Preservation method of specimens was assumed to be formalin/EtOH unless we had information stating otherwise. CAS = California Academy of Sciences, MVZ = Museum of Vertebrate Zoology. (DOCX)