Table 1. Taxon counts for major mammalian taxonomic compendia since 1980 in How many mammal species are there now? Updates and trends in taxonomic, nomenclatural, and geographic knowledge

Table 1. Taxon counts for major mammalian taxonomic compendia since 1980 (see Fig. 1 for graphical representation of species totals for each, except IUCN totals), including the 3 editions of Corbet and Hill’s (C&H) A World List of Mammalian Species; editions 4 through 6 of Walker’s Mammals of the World (WMW); Anderson and Jones’ Orders and Families of Recent Mammals of the World (A&J); Duff and Lawson’s Mammals of the World: A Checklist (D&L); 3 editions of the Mammal Species of the World (MSW); Illustrated Checklist of the Mammals of the World (CMW); International Union for the Conservation of Nature (IUCN) 2008 and 2024-1 listings; and 2 major versions of the Mammal Diversity Database (MDD1 and MDD2). TaxaC&H1 1980MSW1 1982WMW4 1983A&J 1984C&H2 1986C&H3 1991WMW5 1991MSW2 1993Species4,005b4,1704,1514,1994,2314,3364,4444,629cWild extantN AN AN AN AN AN AN AN ARecently extinctN AN AN AN AN AN AN AN ADomesticN AN AN AN AN AN AN AN AGenera1,0141,0331,0171,0571,0551,0661,1161,135Families129135133131132131135132Orders2120202120212126TaxaWMW6 1999D&L 2004MSW3 2005IUCN 2008 aMDD1 2018CMW 2020IUCN 2024MDD2 2024Species4,8095,1155,4165,4896,4956,5545,9836,753Wild extantN AN A5,3385,410d6,3826,4515,899d6,629Recently extinctN AN A75799610384113DomesticN AN A30e17200e17Genera1,1921,1171,2301,2411,3161,3431,3081,353Families146128153156166167164167Orders2827292727272727 aIUCN 2008 totals based on Schipper et al. (2008). bLists 4,007 species, but we identified 2 duplicates (what is now Brucepattersonius iheringi is listed under both Microxus and Oxymycterus, and Prosciurillus leucomus is listed under both Prosciurillus and Callosciurus). cTotal provided in Solari and Baker (2007) and used in Burgin et al. (2018) was found to be incorrect while counting the MSW2 species total and we here provide a corrected total. dIncludes species classified as Extinct in the Wild and does not include humans. eThe IUCN does not assess domestic species.