Ratitæ (rȧ-tī´tẽ).—A division of birds with a keelless, raft or punt-like sternum.
Rhizopoda (ri-zŏp´ō-dȧ).—The root-footed Protozoa.
Rodentia (rō-dĕn´shĭ-ȧ).—An order of animals which gnaw.
Rotifera (rō-tĭf´ẽ-rȧ).—An order of crustacea with a pair of ciliated appendages in motion, resembling wheels.
Ruminantia (roo-mĭ-nă´shĭ-ȧ).—The cloven-footed quadrupeds. Those that chew the cud. They have cloven feet, want incisors, and have a stomach with four cavities.
Taxidermy (tăks´ĭ-dĕr-my).—The art of preparing and preserving specimens of animals.
Teleostei (tē´lẽ-ŏs´te-ī or tĕl´e).—An order including most of the bony fishes.
Thorax (thō´rāks).—The chest of vertebrates, the middle portion of insects, etc.
Ungulata (ŭn-gū-lā-tȧ).—The order of hoofed mammals.
Vertebra (vĕr´tē-brȧ).—One of the bones of the spinal column.