These files include original and processed data from a study of data filtering by the Atlas of Living Australia (ALA) and the Global Biodiversity Information Facility (GBIF). The study has been submitted for publication on 2018-03-04 as the paper "An audit of some filtering effects in aggregated occurrence records" and details of data sources and processing are in that manuscript. ALA and GBIF sourced occurrence records from the Australian Museum (AM) [Malacology], Museums Victoria (MV) [Entomology] and the New Zealand Arthropod Collection (NZAC). The unprocessed ALA and GBIF data are in the zipped files AM-ALA_download.zip, MV-ALA_download.zip, AM-GBIF_verbatim.download.zip, AM-GBIF_occurrence.download.zip, MV-GBIF_verbatim.download.zip, MV-GBIF_occurrence.download.zip, NZAC-GBIF_verbatim.download.zip and NZAC-GBIF_occurrence.download.zip. The processed data are in a single zip file name_change_tables_and_data_notes_ver_.zip. The processed data are my own work and are here made available under a CCA 4.0 licence. Full citations for the ALA and GBIF data are as follows: AM Malacology from ALA Atlas of Living Australia occurrence download at https://biocache.ala.org.au/occurrences/search?&q=collection_uid%3Aco114 accessed on Wed Feb 14 18:44:13 AEDT 2018 AM from GBIF Australian Museum (2017). Australian Museum provider for OZCAM. Occurrence Dataset https://doi.org/10.15468/e7susi accessed via GBIF.org on 2018-02-14 [Malacology section records extracted and archived here] MV from ALA Atlas of Living Australia occurrence download at https://biocache.ala.org.au/occurrences/search?&q=data_resource_uid%3Adr342 accessed on Wed Jan 31 06:42:40 AEDT 2018 [Entomology section records extracted and archived here] MV from GBIF Museums Victoria (2017). Museums Victoria provider for OZCAM. Occurrence Dataset https://doi.org/10.15468/lp1ctu accessed via GBIF.org on 2018-01-30 [Entomology section records extracted and archived here] NZAC from GBIF Wilton A (2018). New Zealand Arthropod Collection (NZAC). Version 1.67. Landcare Research. Occurrence Dataset https://doi.org/10.15468/lrgzz9 accessed via GBIF.org on 2018-01-08