Quaternary, same as Post-Tertiary.
Radius, the smaller and exterior bone of the fore-arm.
Reliquiæ, remains of the dead.
Rhematic, that period when men first began to coin expressions for the most necessary ideas.
Rodent, an animal that gnaws.
Ruminant, an animal that chews the cud.
Sagittal, the suture which connects the parietal bones of the skull.
Savant (sä-vŏng), a person eminent for acquirements.
Scapula, the shoulder-blade.