Average number of species per genera

Value 4.4 species/genus
Organism Mammals
Reference De Vos JM, Joppa LN, Gittleman JL, Stephens PR, Pimm SL. Estimating the normal background rate of species extinction. Conserv Biol. 2015 Apr29(2):452-62. doi: 10.1111/cobi.12380. p.458 right column bottom paragraphPubMed ID25159086
Comments P.458 right column bottom paragraph: "Comparing rates of generic extinctions with species extinction is complex (Russell et al. 1998). Mammal genera contain an average of 4.4 species. Were all mammal genera to have four species in them, then individual species extinction rates of 0.63 E/MSY [extinction per million species per year] would give the observed generic extinction rate of 0.165 (Alroy 1996)."
Entered by Uri M
ID 112642