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The framework of animals, which in vertebrates is composed of bone and cartilage. It serves to support the fleshy parts and the nervous system, and forms levers for the muscles.

Skeleton

The framework of animals, which in vertebrates is composed of bone and cartilage. It serves to support…

A fish comsisting of an ossified skeleton and the ventral fins united in a broad suctorial disk.

Lumpfish

A fish comsisting of an ossified skeleton and the ventral fins united in a broad suctorial disk.

This illustration represents a skeleton of another species of ancient amphibian reptiles.

Raniceps Lyellii

This illustration represents a skeleton of another species of ancient amphibian reptiles.

This is a skeleton of the Megatherium. Megatheria were a group of elephant-sized ground sloths that lived from 2 million to 8,000 years ago. Their smaller ground sloth cousins were the Mylodon.

Megatherium

This is a skeleton of the Megatherium. Megatheria were a group of elephant-sized ground sloths that…

This illustration shows a side view of the human skeleton.

Human Skeleton

This illustration shows a side view of the human skeleton.

This illustration shows a front view of the human skeleton.

Human Skeleton

This illustration shows a front view of the human skeleton.

This is an illustration of the skeleton of a Rhinoceros.

Rhinoceros Skeleton

This is an illustration of the skeleton of a Rhinoceros.

A remarkable genus of fossil lizards, peculiar to the Mesozoic strata. Its anomalous structure was long a puzzle to comparative anatomists.

Pterodactyl

A remarkable genus of fossil lizards, peculiar to the Mesozoic strata. Its anomalous structure was long…

This illustration shows the skeletons of Anthropid Apes compared with that of Man.

Man and Ape Skeletons

This illustration shows the skeletons of Anthropid Apes compared with that of Man.

The internal border of the skeleton of the foot.

Foot Skeleton

The internal border of the skeleton of the foot.

The external border of the skeleton of the foot.

Foot Skeleton

The external border of the skeleton of the foot.

A very large flightless bird.

Dinornis Skeleton

A very large flightless bird.

"Actinomma Asteracanthion, a Radiolarian with a limited number of specialized radii (axes), symmetrically arranged about the center. A, whole animal with portion of two spheres of shell removed. B, section, showing relation of the protoplasm to the skeleton. n, nucleus; p, protoplasm; sk., skeleton." — Galloway

Actinomma Asteracanthion

"Actinomma Asteracanthion, a Radiolarian with a limited number of specialized radii (axes), symmetrically…

The skeletal structure of a gorilla.

Gorilla Skeleton

The skeletal structure of a gorilla.

"Skeleton of Dugong: In which the pelvis is a mere bony ring." — Chambers, 1881

Dugong Skeleton

"Skeleton of Dugong: In which the pelvis is a mere bony ring." — Chambers, 1881

"The vertebre of serpents are so formed as to admit a great pliancy of the body, which is capable of being coiled up, with the head in the center of the coil, and some serpents have the power of throwing themselves to some distance from this coiled position." — Chambers, 1881

Rattlesnake Skeleton

"The vertebre of serpents are so formed as to admit a great pliancy of the body, which is capable of…

"The prey of a serpent is oven thicker than the serpent itself, and to admit of its being swallowed, the throat and body are very dilatable. The bones of the head are adapted to the necessity of a great expansion of the mouth and dilation of the throat." — Chambers, 1881

Serpent Head

"The prey of a serpent is oven thicker than the serpent itself, and to admit of its being swallowed,…

"The Roman soldiers seem to have used two sorts of tents, one, a tent proper, of canvas or some analogous material, and constructed with two solid upright poles, and a roof piece between them; the other more resembling a light hut, of a wooden skeleton, covered by bark, hides, mud, straw, or any material which afforded warmth." — Chambers, 1881

Roman Tent

"The Roman soldiers seem to have used two sorts of tents, one, a tent proper, of canvas or some analogous…

"Skeleton of the Ateles Beleebuth." — Encyclopedia Britanica, 1893

Monkey Skeleton

"Skeleton of the Ateles Beleebuth." — Encyclopedia Britanica, 1893

"The skeleton of the Chacma Baboon." — Encyclopedia Britanica, 1893

Chacma Baboon

"The skeleton of the Chacma Baboon." — Encyclopedia Britanica, 1893

"Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia Britannica, 1893

Asterius Rubens

"Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia…

A restored skeleton of <em>Uintathcrium (Dinoceras) mirabile.</em>

Dinoceras Skeleton

A restored skeleton of Uintathcrium (Dinoceras) mirabile.

"A Skeleton of a young colony of <em>Tubipora purpurea</em>. st, stolon; p, platform. B, Diagrammatic longitudinal section of a corallite, showing two platforms, p, and simple and cup-shaped tabulae, t." &mdash;Encyclopedia Britannica, 1910

Colony of Tubipora Purpurea

"A Skeleton of a young colony of Tubipora purpurea. st, stolon; p, platform. B, Diagrammatic…

"The spinal column consists of abdominal and caudal vertebre, the coalescence of the parapophyses into a complete hemal ring and the suspension of the anal fin generally forming a sufficiently well-marked boundary between the abdominal and caudal regions." &mdash; Encyclopedia Britannica, 1893

Perch Skeleton

"The spinal column consists of abdominal and caudal vertebre, the coalescence of the parapophyses into…

"Skeleton of the Perch's Skull." &mdash; Encyclopedia Britannica, 1893

Perch Skull

"Skeleton of the Perch's Skull." — Encyclopedia Britannica, 1893

"The humerus, which moves freely by a globular head upon the scapula, forming the shoulder-joint." &mdash; Chambers' Encyclopedia, 1875

Humerus

"The humerus, which moves freely by a globular head upon the scapula, forming the shoulder-joint." —…

The radial bone in the human arm.

Radius

The radial bone in the human arm.

The ulna bone in the human arm.

Ulna

The ulna bone in the human arm.

"A. Skeleton of a young colony of Eubipora purpurea. st, Stolon; p, platform. B. Diagrammatic longitudinal section of a corallite, showing two platforms, p, and simple and cup-shaped tabulae, t." &mdash; The Encyclopedia Britannica, 1910

Tubipora Purpurea

"A. Skeleton of a young colony of Eubipora purpurea. st, Stolon; p, platform. B. Diagrammatic longitudinal…

"A, Portion of the surface of a colony of Heliopora coerulea magnified, showing two calices and the surrounding coenenchymal tubes. B, Single zooid with the adjacent soft tissues as seen after removal of the skeleton by decalcification. Z1, the distal, and Z2, the proximal or intracalicular portion of the zooid; ec, ectoderm; ct, coenechymal tubes; sp, superficial network of solenia." &mdash; The Encyclopedia Britannica, 1910

Heliopora Corerulea

"A, Portion of the surface of a colony of Heliopora coerulea magnified, showing two calices and the…

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process; b, lower jaw; c, cervical vertebra; co, coracoid bone; d, humerus; e, radius; f, ulna; g, metacarpus; h, second phalanx of chief digit of wing; h, phalanges of lower digit; h'', first phalanx of chief digit; i, clavicle; k, sternum; l, pelvis; m, coccyx; n, femur; o, tibia; p, tarso-metatarsus; q, phalanges of foot." &mdash; Winston's Encyclopedia, 1919

Vulture Skeleton

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process;…

"Skeleton of hind foot of Kangaroo." &mdash;The Encyclopedia Britannica, 1910

Kangaroo Skeleton

"Skeleton of hind foot of Kangaroo." —The Encyclopedia Britannica, 1910

"The skeleton of the trunk and the limb arches seen from the front. C, clavicle; S, scapula; Oc, innominate bone attached to the side of the sacrum dorsally and meeting its fellow at the pubic symphysis in the ventral median line." &mdash;Martin, 1917

Skeletal Trunk

"The skeleton of the trunk and the limb arches seen from the front. C, clavicle; S, scapula; Oc, innominate…

"Skeleton of the Mylodon robustus." &mdash;The Encyclopedia Britannica, 1903

Mylodon Robustus

"Skeleton of the Mylodon robustus." —The Encyclopedia Britannica, 1903

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first digit or pollex; d2, d3, d4, d5, other digits of the manus supporting um, the wing-membrane; m, m, metacarpal bones; ph1, first phalanx; ph2, second phalanx; ph3, third phalanx; am, antebrachial membrane; f, femur; t, tibia; fb, fibula (rudimentary); c, calcaneum or calcar supporting im, the interfemoral membrane; pcl, post-calcaneal lobe." &mdash;The Encyclopedia Britannica, 1903

Noctule Bat

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first…

"Restoration of Dinoceras Mirabile." &mdash;The Encyclopedia Britannica, 1903

Dinoceras Mirabile

"Restoration of Dinoceras Mirabile." —The Encyclopedia Britannica, 1903

"Restoration of Palaeotherium." &mdash;The Encyclopedia Britannica, 1903

Palaeotherium

"Restoration of Palaeotherium." —The Encyclopedia Britannica, 1903

"Restored skeleton of Mammoth (Elephas primigenius)." &mdash;The Encyclopedia Britannica, 1903

Mammoth

"Restored skeleton of Mammoth (Elephas primigenius)." —The Encyclopedia Britannica, 1903

A human skeleton

Skeleton

A human skeleton

A side-view of the skull.

Skull

A side-view of the skull.

A front-view of the skull.

Skull

A front-view of the skull.

Skeleton of a horse that lived in Colorado more than a million years ago. From Guide Leaflet of the American Museum by Matthews.

Horse Skeleton

Skeleton of a horse that lived in Colorado more than a million years ago. From Guide Leaflet of the…

The four-toed horse restored from a study of its fossil skeleton.

Horse

The four-toed horse restored from a study of its fossil skeleton.

Skeleton of the fore limb of the horse. <em>sc</em>, shoulder blade; <em>h</em>, humerus; <em>r</em>, radius; <em>ua</em>, ulna; <em>m</em>, splint bone or fourth metacarpal; <em>p</em>, phalanges.

Fore Limb

Skeleton of the fore limb of the horse. sc, shoulder blade; h, humerus; r,…

Nymph ready to change

Molting of a Grasshopper

Nymph ready to change

The skin split along the back and the adult emerging.

Molting of a Grasshopper

The skin split along the back and the adult emerging.

The continuing of the process of the molting.

Molting of a Grasshopper

The continuing of the process of the molting.

The adult insect drying out.

Molting of a Grasshopper

The adult insect drying out.

1. Frontal bone 2. Parietal bone 3. Coronal Suture 4. Squamous portion of Temporal bone 5. Mastoid process of Temporal bone 6. Zygoma 7. Superior Maxillary Bone 8. Inferior Maxillary Bone 9. Tempero-Maxillary Bone 10. Nasal Bone 11. Orbit 12. Cervical Vertebra 13. First Rib 14. Clavicle 15. Manubrium 16. Body of Sternum 17. Ensiform Process of Sternum 18. Shoulder Blade 19. Acromion Process of Scapula 20. Costal Cartilage 21. Seventh Rib 22. Eighth Rib 23. Twelfth Rib 24. Twelfth Dorsal Vertebra 25. Lumbar Vertebra 26. Head of Humerus 27. Humerus 28. Elbow-Joint 29. Radius 30. Ulna 31. Wrist 32. Metacarpal bone 33.Thumb 34. Phalanges of the Finger 35. Sacrum 36. Ilium 37. Crest of the Ilium 38. Pubic Bone 39. Ischium 40. Sacro-Iliac Symphysis 41. Pubic Symphysis 42. Obturator Foramen 43. Head of Femur 44. Neck of Femur 45. Greater trochanter 46. Femur 47 Patella knee-pan 48. Tibia 49. Fibula 50. External Malleolus 51. Internal Malleolus 52. Os Calcis 53. Tarsus 54. Metatarsal Bone 55. Phalanges of Toes

Skeleton

1. Frontal bone 2. Parietal bone 3. Coronal Suture 4. Squamous portion of Temporal bone 5. Mastoid process…

Skeleton of a bat.

Bat Skeleton

Skeleton of a bat.

"The Scapula, or shoulder blade, is one of the two bones, the other being the clavicle, which form the pectoral arch or shoulder girdle." &mdash;Finley, 1917

Shoulder blade

"The Scapula, or shoulder blade, is one of the two bones, the other being the clavicle, which form the…

A human skeleton.

Human skeleton

A human skeleton.

"View from above of the Atlas, the first cervical vertebra."&mdash;Finley, 1917

Atlas

"View from above of the Atlas, the first cervical vertebra."—Finley, 1917

"Side view of the axis, the second cervical vertebra."&mdash;Finley, 1917

Axis

"Side view of the axis, the second cervical vertebra."—Finley, 1917

Side view of the dorsal vertebra.

Dorsal vertebra

Side view of the dorsal vertebra.

A section of a human vertebra, showing structure.

Section of Vertebra

A section of a human vertebra, showing structure.

"Section of two lumbar vertebrae, showing ligaments."&mdash;Finley, 1917

Lumbar vertebrae

"Section of two lumbar vertebrae, showing ligaments."—Finley, 1917

The Human Skeleton. Labels: a, parietal bone; b, frontal; c, cervical vertebrae; d, sternum; e, lumbar vertebrae; f, ulna; g, radius; h, wrist or carpal bones; i, metacarpal bones; k, phalanges; l, tibia; m, fibula; n, tarsal bones; o, metatarsal; p, phalanges; , patella; r, femur; s, haunch (hip) bone; t, humerus; u, clavicle.

The Human Skeleton

The Human Skeleton. Labels: a, parietal bone; b, frontal; c, cervical vertebrae; d, sternum; e, lumbar…

The human clavicle bone (anterior portion of the shoulder girdle).

The Human Clavicle

The human clavicle bone (anterior portion of the shoulder girdle).

The human scapula bone (shoulder blade). Labels: 1, glenoid cavity; 2, end of the spine of scapula.

The Human Scapula

The human scapula bone (shoulder blade). Labels: 1, glenoid cavity; 2, end of the spine of scapula.