Handbook of the Mammals of the World

Volume 8 of the Handbook of Mammals of the World (HMW) contains an unusual compilation of important but smaller orders that we now know have either distant or nearly no taxonomic relationships. They include armadillos, sloths and anteaters. 

Volume 6 of the Handbook of Mammals of the World (HMW) covers 27 families in two orders, lagomorphs and most of the families of the order Rodentia. 

Humankind has long felt a kinship of ocean-dwelling mammals, and human culture, customs, and literature abound with sea mammal lore. This volume covers 19 families in 3 orders.

This second volume in the Handbook of the Mammals of the World series covers 17 families in six orders; although united here, their grouping as "hoofed mammals" is more practical than phylogenetic.