The Mammal Anatomy: Skeleton ClipArt gallery provides 277 views of bones, teeth, and skeletal system of various mammals.

"Sloth is the popular name for any individual of the Edentate group Tardigrada, from their slow and awkward movements on the ground, owing to the peculiar structure of the wrist and ankle joints. The feet are armed with long claws, and turned toward the body, so that the animal is compelled to rest on the side of the hind foot, while the disproportionate length of the fore-limbs causes it to rest also on the elbows. It shuffles forward, alternately stretching the fore legs and hooking the claws into the ground, or grasping some object to draw itself along. Sloths are natives of South America, nocturnal in habit, and are found in the forests of that region, passing their lives among the branches of trees, on the leaves and young shoots of which they feed."—(Charles Leonard-Stuart, 1911)

Giant Sloth

"Sloth is the popular name for any individual of the Edentate group Tardigrada, from their slow and…

A sperm whale fetal skull, bottom view.

Sperm Whale Skull

A sperm whale fetal skull, bottom view.

Section through the upper part of the cervical region of the cord of an orangoutang. Showing the origin of the spinal part of the spinal accessory nerve.

Spinal Cord

Section through the upper part of the cervical region of the cord of an orangoutang. Showing the origin…

The backward and forward movement of the jaws and the great size and strength of the lower jaw, adapt rodents and gnawers to their mode of life, as in the squirrel. Labels: 1, The enamel of the gnawing tooth. 2, The ivory. 3, The lateral furrows of the molar teeth.

The Lower Jaw of a Squirrel

The backward and forward movement of the jaws and the great size and strength of the lower jaw, adapt…

"The annexed cut represents the horns of the stag at different ages. During the first year, there is only a light protuberance; the second year is marked by the brow antler (1); the third year, by the bad antler (2); the fourth, by the tray antler (3); the fifth, by the crockets (4); the sixth, by the beam antler (5), the various parts of which are termed (A) crockets, (B) tray, (C) bay, (D) brow, (E) pearls, (F) the beam of the antler; seventh year (6)." — Chambers' Encyclopedia, 1875

Stag Horns

"The annexed cut represents the horns of the stag at different ages. During the first year, there is…

Ligaments of the stifle joint- antero-internal aspect. Labels: a, internal lateral femoro-tibial ligament; b, internal lateral patellar ligament; c, internal , d, middle, and e, external straight patellar ligaments.

Stifle Joint Ligaments

Ligaments of the stifle joint- antero-internal aspect. Labels: a, internal lateral femoro-tibial ligament;…

"Fore and Hind Leg of a Tapir. A, scapula; I, ilium, or shinbone of pelvis; H, humerus; F, femur; O, olecranon, or tip of the elbow; P, patella; U, ulna; T, tibia; R, radius; Fi, fibula." -Cooper, 1887

Tapir Legs

"Fore and Hind Leg of a Tapir. A, scapula; I, ilium, or shinbone of pelvis; H, humerus; F, femur; O,…

This illustration shows the skull of a tapir. Tapirs are large browsing animals, roughly pig-like in shape but with short, prehensile trunks and large front overbites.

Tapir Skull

This illustration shows the skull of a tapir. Tapirs are large browsing animals, roughly pig-like in…

Ligaments of the tarsus- postero-internal view. Labels: a, internal lateral ligament; b, calcaneo-cuboid ligament.

Tarsus Ligaments

Ligaments of the tarsus- postero-internal view. Labels: a, internal lateral ligament; b, calcaneo-cuboid…

Ligaments of the tarsus- antero external view. Labels: a, external lateral, and b, oblique ligament.

Tarsus Ligaments

Ligaments of the tarsus- antero external view. Labels: a, external lateral, and b, oblique ligament.

Bones of left tarsus of a horse, seen from in front and outside. Labels: 1, calcaneum; 2, astragalus; 3, cuneiforme magnum; 4, cuneiforme medium; 5, cuboid.

Tarsus of a Horse

Bones of left tarsus of a horse, seen from in front and outside. Labels: 1, calcaneum; 2, astragalus;…

Teeth of a carnivorous animal that lives on flesh alone. The front teeth are designed for tearing, while the back teeth have sharp edges for cutting.

Teeth of a Carnivorous Animal

Teeth of a carnivorous animal that lives on flesh alone. The front teeth are designed for tearing, while…

Teeth of a frugivore (fruit-eating animal). Animals that live on soft fruits do not need such grinders as grass-eating animals do, instead they have rounded teeth which serve to crush their food.

Teeth of a Frugivore

Teeth of a frugivore (fruit-eating animal). Animals that live on soft fruits do not need such grinders…

The teeth of a lion.

Teeth of a Lion

The teeth of a lion.

1. Dentition (teeth) of man. 2. Dentition of hyena. 3. Dentition of pig. 4. Dentition of Patagonian cavy (type of rodent). 5. Section of skull of Indian elephant, showing dentition of right side. 6. Crown of upper molar of horse, showing enamal folds. 7. Grinding surface of molar of African elephant, with enamal folds. 8. Single tooth of blue shark. 9. Longitudinal section of human tooth. 1. Incisors (human); C, canines; P, premolars; M, molars. a, enamel; b, dentine; c, cement (crusta petrosa); d, pulp cavity.

Teeth of Man and Several Animal Species

1. Dentition (teeth) of man. 2. Dentition of hyena. 3. Dentition of pig. 4. Dentition of Patagonian…

Teeth of the right side of the lower jaw of the Chimpanzee. (i) incisors; (c) canine tooth; (pm) premolars; (m) molars.

Chimpanzee Teeth

Teeth of the right side of the lower jaw of the Chimpanzee. (i) incisors; (c) canine tooth; (pm) premolars;…

The first step in the development of teeth consists in a downward growth from the Rete Malpighi or the deeper layer of stratified epithelium of the mucous membrane of the mouth, which first becomes thickened in the neighborhood of the maxillae now in the course of formation. This development is shown in a section of the upper jaw of a fetal sheep. A- 1, common enamel germ dipping down into the mucous membrane; 2, palantine process of jaw; 3, Reta Malpighi. B- Section similar to A, but passing through one of the special enamel germs here becoming flask-shaped; c, d, epithelium of mouth; f, neck; f', body of special enamel organ; p, papilla; s, dental sac forming; f p, the enamel germ of permanent tooth; m, bone of jaw; v, vessel cut across.

Development of Teeth

The first step in the development of teeth consists in a downward growth from the Rete Malpighi or the…

A horse's mouth at eight years old.

Eight Year Old Horse Teeth

A horse's mouth at eight years old.

A horse's mouth at five years old.

Five Year Old Horse Teeth

A horse's mouth at five years old.

A horse's mouth at five years old.

Five Year Old Horse Teeth

A horse's mouth at five years old.

A horse's mouth at four and a half years old.

Four and a Half Year Old Horse Teeth

A horse's mouth at four and a half years old.

Incisor and canine teeth of a horse. A, front, B, lateral, and C, corner incisor; D, canine teeth.

Incisor and Canine Horse Teeth

Incisor and canine teeth of a horse. A, front, B, lateral, and C, corner incisor; D, canine teeth.

Teeth from a very old horse. The right tush has fallen out.

Old Horse Teeth

Teeth from a very old horse. The right tush has fallen out.

A horse's mouth at six years old.

Six Year Old Horse Teeth

A horse's mouth at six years old.

A horse's mouth at three years old.

Three Year Old Horse Teeth

A horse's mouth at three years old.

Jaws of a tiger, showing that when the jaws are closed the ends of the teeth do not press upon the ends of the teeth that are opposite to them, but instead the teeth pass by each other. This arrangement of these long tearing teeth gives them great power in tearing flesh.

Jaws of a Tiger

Jaws of a tiger, showing that when the jaws are closed the ends of the teeth do not press upon the ends…

"Skull of Tillotherium Fodiens." —The Encyclopedia Britannica, 1903

Tillotherium Fodiens

"Skull of Tillotherium Fodiens." —The Encyclopedia Britannica, 1903

"Tinoceras, or tinotherium, is a genus of mammals now extinct, found in the Eocene, and representing the order Dinocerata. The individuals were all large, some of them nearly equaling the elephants, while the brain was smaller than that of any living or fossil mammal."—(Charles Leonard-Stuart, 1911)

Tinoceras

"Tinoceras, or tinotherium, is a genus of mammals now extinct, found in the Eocene, and representing…

Incisor tooth of a horse-posterior view. Labels: a, outer layer of enamel; b, inner layer of enamel round the infundibulum; c, dental star; d, the dentine.

Horse Incisor Tooth

Incisor tooth of a horse-posterior view. Labels: a, outer layer of enamel; b, inner layer of enamel…

Section through a premolar tooth of a cat still embedded in its socket. Labels: 1, enamel; 2, dentine; 3, cement; 4, the gum; , the bone of the lower jaw; c, the pulp-cavity.

Premolar Tooth

Section through a premolar tooth of a cat still embedded in its socket. Labels: 1, enamel; 2, dentine;…

Right lateral view of a cervical vertebra of a horse. Labels: 1, neural spine; 2, anterior oblique processes; 3, posterior oblique processes; 5, convex anterior end, and 9, concave posterior end of the centrum; 6, anterior ends of transverse processes; and 7, posterior end of right one; 8, inferior process, or hypapophsis.

Cervical Vertebra of a Horse

Right lateral view of a cervical vertebra of a horse. Labels: 1, neural spine; 2, anterior oblique processes;…

The vertebra of the whale. (c) body; (n n ) arches enclosing the spinal cord.

Whale vertebra

The vertebra of the whale. (c) body; (n n ) arches enclosing the spinal cord.

Right lateral view of the cervical portion of the vertebral column of a horse. 1 to 7, the seven segments; 1, the atlas-a, its wing-S, internal foramen of alar gutter-9, posterior foramen of wing; 2, the dentata-11, neural spine; 12, transverse process; 13, centrum; 14, foramen corresponding to intervertebral foramen; 10, atlo-axoid space; the odontoid process is seen below the figures; 15, zygapophyses, or olbique processes; 16, centra, or bodies, in situ- 17, hypapophyses, or inferior processes-b, transverse processes-c, trifid transverse process of sixth vertebra-d, transverse process of seventh.

Horse Vertebral Column

Right lateral view of the cervical portion of the vertebral column of a horse. 1 to 7, the seven segments;…

This illustration shows the flipper of a whale. The whales use their flippers to propel themselves through the water.

Whale Flipper

This illustration shows the flipper of a whale. The whales use their flippers to propel themselves through…

"Left fore-limb of Balaenoptera. Sc., Sca pula with spine (sp.); H., humerus; R., radius; U., ulna; C., carpals embedded in matrix; Mc., metacarpals; Ph., phalanges." -Thomson, 1916

Whale Forelimb

"Left fore-limb of Balaenoptera. Sc., Sca pula with spine (sp.); H., humerus; R., radius; U., ulna;…

"Fore-limb of whale (Megaptera longimana)." -Thomson, 1916

Whale Forelimb

"Fore-limb of whale (Megaptera longimana)." -Thomson, 1916

"Pelvis and hind-limb of Greenland whale (Balaena). P., Pelvis; F., femur; T., tibia." -Thomson, 1916

Greenland Whale Pelvis

"Pelvis and hind-limb of Greenland whale (Balaena). P., Pelvis; F., femur; T., tibia." -Thomson, 1916