ClipArt ETC
"1, primitive carotid artery dividing itself into carotid external and carotid internal; 3, occipital branch to the back part of the skull; 4, upper hyoides artery; 5, lower pharyngeal artery; 6, masseter artery; 7, submental artery; 8, lower coronary artery; 9, upper coronary artery; 10, deep branch; 11, back cervical artery; 12, continuation and fold of the occipital; 13, descending branch for muscles of the neck; 14, posterior auricular; 15, temporal artery; 16, pariental branches; 17, frontal branches." — Richardson, 1906

Facial Arteries

"1, primitive carotid artery dividing itself into carotid external and carotid internal; 3, occipital…

"A species of Hawk-moth or lepidopterous insect of the family Sphingidae, not uncommon in some parts of England and of the continent of Europe, and very widely distributed over the world, being found in Africa, the Mauritius, and the East Indies. It measures almost five inches from tip to tip of the extended wings; is of a dark color, the body yellow with black markings, the thorax with pale markings which have some resemblance to a skull, and from which it derives its name." — Chambers, 1881

Death's Head Moth

"A species of Hawk-moth or lepidopterous insect of the family Sphingidae, not uncommon in some parts…

The skull of a crocodile with visible teeth.

Crocodile Skull

The skull of a crocodile with visible teeth.

The skull of a serpent with visible teeth.

Serpent Skull

The skull of a serpent with visible teeth.

The side view and base of the skull of an ape.

Ape Skull

The side view and base of the skull of an ape.

"The side view of the skull of an adult Orang" — Encyclopedia Britanica, 1893

Orangutang Skull

"The side view of the skull of an adult Orang" — Encyclopedia Britanica, 1893

"Side views of skull and hyoid bone of Howling Money." — Encyclopedia Britanica, 1893

Howling Monkey Skull

"Side views of skull and hyoid bone of Howling Money." — Encyclopedia Britanica, 1893

A fish with a broad flat skull, deformed from synosteosis of frontal and parietal bones.

Flathead

A fish with a broad flat skull, deformed from synosteosis of frontal and parietal bones.

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla; Mx, maxilla; Na, nasal bone; Ma, malar bone; L, lacrymal bone; Fr, frontal bone; Sq, squamosal bone; Pa, parietal bone; oc, occipital condyle; pp, paroccipital process; i, the three incisor teeth; c, the canine tooth; pm1, the situation of the rudimentary first premolar, which has been lost in the lower, but is present in the upper jaw; pm2, pm3, and pm4, the three fully-developed premolar teeth; m, the three true molar teeth." — Encyclopedia Britannica, 1893

Horse Skull

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla;…

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

Perch Skull

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

"Lower view of skull of perch." — Encyclopedia Britannica, 1893

Perch Skull

"Lower view of skull of perch." — Encyclopedia Britannica, 1893

"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

Ceratodus

"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold; m, Meckelian cartiledge; mx, maxillary; d, dentary; h, hyoid; op, operculum; br, branchiostergal; s.cl, supraclavicular; p.cl, postclavicular; cl, clavicle; i.cl, infraclavicular." — Encyclopedia Britannica, 1893

Polyodon

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold;…

"Upper aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." — Encyclopedia Britannica, 1893

Polypterus Skull

"Upper aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital;…

"Lower aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." — Encyclopedia Britannica, 1893

Polypterus Skull

"Lower aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital;…

"Side view, with the membrane-bones. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." — Encyclopedia Britannica, 1893

Polypterus Skull

"Side view, with the membrane-bones. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary;…

"Lower aspect of the skull, part of the bones being removed on the side. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." — Encyclopedia Britannica, 1893

Polypterus Skull

"Lower aspect of the skull, part of the bones being removed on the side. An, angular; ao, anteorbital;…

"Skull and teeth of Bennett's Kangaroo (Macropus bennettii). i1, i2, i3, first second and third upper incisors; pm, second or posterior premolar (the first having been already shed); m1, m2, m3, m4, the four true molars. The last, not fully developed, is nearly concealed by the ascending ramus of the jaw." —The Encyclopedia Britannica, 1910

Bennett's Kangaroo

"Skull and teeth of Bennett's Kangaroo (Macropus bennettii). i1, i2, i3, first second and third upper…

"Skull and teeth of Gray's Rat Kangaroo (Bellongia grayii). c, upper canine tooth. i1, i2, i3, first, second, and third upper incisors; pm, second or posterior premolar (the first having been already shed); m1, m2, m3, m4, the four true molars." —The Encyclopedia Britannica, 1910

Gray's Rat Kangaroo

"Skull and teeth of Gray's Rat Kangaroo (Bellongia grayii). c, upper canine tooth. i1, i2, i3, first,…

"Skull of the Aye-aye (Chiromys madagascariensis)." —The Encyclopedia Britannica, 1910

Aye-Aye Skull

"Skull of the Aye-aye (Chiromys madagascariensis)." —The Encyclopedia Britannica, 1910

"The internal structure of the lion, except in slight details, resembles that of the other Felidae, the whole organization being that of an animal modified to fulfil, in the most perfect degree yet attained, an active, predaceous mode of existence." —The Encyclopedia Britannica, 1910

Lion Skull

"The internal structure of the lion, except in slight details, resembles that of the other Felidae,…

The skull of a woodpecker.

Woodpecker Skull

The skull of a woodpecker.

"The mouth, nose and pharynx, with the commencement of the gullet and larynx, as exposed by a section, a little to the left of the median plane of the head. a, vertebral column; b, gullet; c, wind-pipe; d, larynx; e, epiglottis; f, soft palate; g, opning of eustachian tube; k, tongue; l, hard palate; m, the sphenoid bone on the base of the skull; n, the fore part of the cranial cavity; o, p, q, the turbinate bones of the outer side of the left nostril-chamber." —Martin, 1917

Mouth

"The mouth, nose and pharynx, with the commencement of the gullet and larynx, as exposed by a section,…

The human skull.

Skull

The human skull.

"Longitudinal and Vertical section of the skull of a dog, with mandible and hyoid arch. an, anterior narial aperture; MT, maxillo-turbinal bone; ET, the ethmo-turbinal; Fr, frontal; Pa, pariental; IP, interparietal; SO, supra-occipital; ExO, sphenoid; OS, orbito-sphenoid; PS, presphenoid; Pl, palatine; Vo, vomer; Mx, maxilla; PMx, premaxilla; sh, stylo-hyal; eh, epi-hyal; ch, cerato-hyal; bh, basihyal; th, thyro-hyal; s, symphysis of mandible; cp, coronoid process; cd, condyle; a, angle; id, inferior dental canal. The mandible is displaced downwards, to show its entire form; the * indicated the part of the cranium to which the condyle is articulated." —The Encyclopedia Britannica, 1903

Dog Skull

"Longitudinal and Vertical section of the skull of a dog, with mandible and hyoid arch. an, anterior…

"Skull of two-toed sloth." —The Encyclopedia Britannica, 1903

Sloth Skull

"Skull of two-toed sloth." —The Encyclopedia Britannica, 1903

"Skull of Rhinopoma Microphyllum." —The Encyclopedia Britannica, 1903

Rhinopoma Microphyllum

"Skull of Rhinopoma Microphyllum." —The Encyclopedia Britannica, 1903

"Side view of skull of Cape Jumping Hare. Pmx, premaxilla; Mx, maxilla; Ma, malar; Fr, frontal; L, lachrymal; Pa, parietal; Na, nasal; Sq, squamosal; Ty, tympanic; ExO, exoccipital; AS, alisphenoid; OS, orbito-sphenoid; Per, mastoid bulla." —The Encyclopedia Britannica, 1903

Cape Jumping Hare

"Side view of skull of Cape Jumping Hare. Pmx, premaxilla; Mx, maxilla; Ma, malar; Fr, frontal; L, lachrymal;…

"Skull of Hystrix Eristata. t, temporal muscle; m, masseter. m', portion of masseter transmitted through the infra-orbital foramen, the superior maxillary nerve passing outwards between it and the maxillary bone." —The Encyclopedia Britannica, 1903

Hystrix Eristata

"Skull of Hystrix Eristata. t, temporal muscle; m, masseter. m', portion of masseter transmitted through…

"Vertical and Longitudinal section through skull of Castor Fiber, showing the cerebral cavity, the greatly-developed turbinal lamellae, the mode of implantation of the large over-growing chisel-edged incisor, and the curved rootless molars." —The Encyclopedia Britannica, 1903

Castor Fiber

"Vertical and Longitudinal section through skull of Castor Fiber, showing the cerebral cavity, the greatly-developed…

"Skull of Arciomys Monax." —The Encyclopedia Britannica, 1903

Arciomys Monax

"Skull of Arciomys Monax." —The Encyclopedia Britannica, 1903

"Skull of Fiber zibethica." —The Encyclopedia Britannica, 1903

Fiber Zibethica

"Skull of Fiber zibethica." —The Encyclopedia Britannica, 1903

"Skull of Hydrochaerus Capybara." —The Encyclopedia Britannica, 1903

Hydrochaerus Capybara

"Skull of Hydrochaerus Capybara." —The Encyclopedia Britannica, 1903

"Terrestril Rodents, with imperfect clavicles, elongated hind limbs, short recurved tail, and long ears. Skull compressed, frontals with large wing-shaped post-orbital processes; molars as in Lagomyidae." —The Encyclopedia Britannica, 1903

Lepus Timidus

"Terrestril Rodents, with imperfect clavicles, elongated hind limbs, short recurved tail, and long ears.…

"Skull and Dentition of Dendrohyrax Dorsalis." —The Encyclopedia Britannica, 1903

Dendrohyrax Dorsalis

"Skull and Dentition of Dendrohyrax Dorsalis." —The Encyclopedia Britannica, 1903

"Skull of Dinotherium Giganteum." —The Encyclopedia Britannica, 1903

Dinotherium Giganteum

"Skull of Dinotherium Giganteum." —The Encyclopedia Britannica, 1903

"Skull of Hydropotes inermis (adult male), a deer without antlers, but with largely-developed upper canine teeth." —The Encyclopedia Britannica, 1903

Hydropotes Inermis

"Skull of Hydropotes inermis (adult male), a deer without antlers, but with largely-developed upper…

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

Tillotherium Fodiens

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

"Skull of Eupleres goudoti." —The Encyclopedia Britannica, 1903

Eupleres Goudoti

"Skull of Eupleres goudoti." —The Encyclopedia Britannica, 1903

"Skull and Dentition of Proteles cristatus." —The Encyclopedia Britannica, 1903

Proteles Cristatus

"Skull and Dentition of Proteles cristatus." —The Encyclopedia Britannica, 1903

"Skull and Dentition of Otaria Forsteri." —The Encyclopedia Britannica, 1903

Otaria Forsteri

"Skull and Dentition of Otaria Forsteri." —The Encyclopedia Britannica, 1903

"Skull of African Manatee (Manatus senegatensis)." —The Encyclopedia Britannica, 1903

African Manatee

"Skull of African Manatee (Manatus senegatensis)." —The Encyclopedia Britannica, 1903

"Under Side of Skull of Cynomys Ludovicianus." —The Encyclopedia Britannica, 1903

Cynomys Ludovicianus

"Under Side of Skull of Cynomys Ludovicianus." —The Encyclopedia Britannica, 1903

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.

A buffalo skull

Buffalo

A buffalo skull

"Membranous cartilage skull of <em>Cyclostoma</em>."&mdash;Finley, 1917

Skull of Cyclostoma

"Membranous cartilage skull of Cyclostoma."—Finley, 1917

Skull of <em>salamandra maculosa</em>, the fire salamander.

Skull of fire salamander

Skull of salamandra maculosa, the fire salamander.

Skull of a Greek tortoise, showing the brain cavity.

Skull of Greek tortoise

Skull of a Greek tortoise, showing the brain cavity.

Skull of <em>corvus corone</em>, or carrion crow, showing the brain cavity.

Crow skull

Skull of corvus corone, or carrion crow, showing the brain cavity.

Skull of a deer, showing the brain cavity.

Deer skull

Skull of a deer, showing the brain cavity.

Skull of a baboon, showing the brain cavity.

Baboon skull

Skull of a baboon, showing the brain cavity.

Showing the brain cavity of a human.

Human skull

Showing the brain cavity of a human.

A human skeleton.

Human skeleton

A human skeleton.

A side view of the human skull at birth.

Infant skull

A side view of the human skull at birth.

A top down view of the human skull at birth.

Infant skull

A top down view of the human skull at birth.

Adult skull, side view.

Adult skull

Adult skull, side view.

Front view of an adult skull.

Adult skull

Front view of an adult skull.

A bottom view of an adult human skull.

Adult skull

A bottom view of an adult human skull.

A top down view of a human skull.

Adult skull

A top down view of a human skull.