Four of the seven living genera include extinct species. The number of species in genera varies considerably among taxonomic groups. Balaenopterids consist of two genera and eight species. The order Psittaciformes consists of 387 extant species belonging to 87 genera. The family Fringillidae contains 228 species divided into 50 genera and three subfamilies. Most genera and species in the family are extinct. Some notable genera and species are also included. The family contains 344 species divided into 49 genera. The family contains 383 species divided into 95 genera. Numerous other genera and species in the family are also edible. The family includes 88 species divided into 19 genera. There are about 40 species in these three genera. These species are placed within 1,260 genera and 106 families. There are 145 species in 16 genera. It contains 256 species in 56 genera.