Search Results

Search Results

Refine this search

211 results

Image

from article Prehistoric technology

Result thumbnail
Elements of stone flaking. (a) Relationship between the core and the flake. (b) Major feature of the ventral or release surface of the flake. (After I. Tattersall, E. Delson, and J. A. Van Couvering, eds., Encyclopedia of Human Evolution and…

Image

from article Prehistoric technology

Result thumbnail
Principal techniques of stone-tool manufacture. (a) Hard-hammer, with free-hand percussion. (b) Anvil technique. (c) Bipolar technique. (d) Soft-hammer percussion. (e) Indirect percussion or punch technique. (f) Pressure flaking. (After I.…

Image

from article Prehistoric technology

Result thumbnail
Potters from the village of Harappa, Pakistan, display their wares in front of a replica of a two-chambered kiln used by ancient potters in the Indus Valley civilization. (Photo courtesy of R. P. Wright)

Image

from article Paleopathology

Result thumbnail
Pottery figurine of an achondroplastic dwarf from an archeological site in Tachina, Esmeraldas, Ecuador, dated between 500 BCE and 500 AD. (Department of Anthropology, National Museum of Natural History, Smithsonian Institution Catalog No. 449562)

Image

from article Paleopathology

Result thumbnail
Sword trauma that removed part of the left upper jaw and the right lower jaw so that no remaining teeth were in contact between the jaws. The adult male survived this injury. The skull is from an archeological burial site near the Stewart River,…

Image

from article Paleopathology

Result thumbnail
Destruction of the lower portion of the fourth lumbar vertebra (arrow), probably caused by tuberculosis, from a young male skeleton found at the archeological burial site of Bâb edh-Dhrâ in Jordan, dated to approximately 3300 BCE. (Department of…

Image

from article Paleopathology

Result thumbnail
The fused spine and ribs in a case of ankylosing spondylitis from an adult male found at a burial site near the Kuskokwim River, Alaska. (Department of Anthropology, National Museum of Natural History, Smithsonian Institution Catalog No. 351296)

Image

from article Paleopathology

Result thumbnail
The effect of scurvy on the right side of the cranium of an 11-year-old child from the archeological site of Pachacamac, Peru. (Department of Anthropology, National Museum of Natural History, Smithsonian Institution Catalog No. 266599)

Image

from article Neandertals

Result thumbnail
Neandertal cranium excavated from Forbes' Quarry, Gibraltar. Note the pronounced brow ridges, large braincase, and receding forehead. (Photo courtesy of Clive Finlayson, Gibraltar Museum)

Image

from article Neandertals

Result thumbnail
Gorham's Cave, Gibraltar, is the last known site of Neandertal occupation, being dated possibly to 30,000 years ago. (Photo courtesy of Clive Finlayson, Gibraltar Museum)

Image

from article Neandertals

Result thumbnail
Reconstructed skull of a Neandertal from the cave at La Chapelle-aux-Saints, France. (Illustration adapted from an original drawing by M. F. Ashley Montagu)

Image

from article Anthropology

Result thumbnail
Fossil skulls of four different species of Homo (clockwise from upper left): Homo neanderthalensis, Homo antecessor, Homo erectus, and Homo sapiens. Each skull shows different anatomical variations. (Credit: creativemarc/Shutterstock)

Image

from article Anthropology

Result thumbnail
The indigenous inhabitants of Siberut Island (West Sumatra, Indonesia) are known as the Mentawai people. They live a seminomadic hunter-gatherer life in the coastal and rainforest environments of the island. (Credit: Chanwit Whanset/Shutterstock)

Image

from article Neandertal DNA

Result thumbnail
The geographical range within which Neandertal remains have been found (dashed line). White dots show the sites of the discoveries used to estimate the almost-complete hypervariable segment I (HVS-I) sequence of the Neandertal mtDNA. The approximate…

Image

from article Neandertal DNA

Result thumbnail
The mtDNA hypervariable segment I (HVS-I) diversity found in eight Neandertals. The nucleotide substitutions and insertions relative to the Cambridge Reference Sequence (CRS) are shaded. (Credit: Igor Ovchinnikov and William Goodwin)

Image

from article Neandertal DNA

Result thumbnail
Phylogenetic analysis of the Neandertal mtDNA hypervariable segment I (HVS-I) sequence. (a) Neighbor-joining tree of the Neandertal mtDNA sequences and 2500 modern human HVS-I sequences from 43 modern populations. (b) Neighbor-joining tree of the…

Image

from article Fossil humans

Result thumbnail
Skeletal remains of Homo naledi (an offshoot of the hominin family) from a South African cave. The partial skeleton in the center consists of bones from several individuals. (Copyright © Lee Berger)

Image

from article Fossil humans

Result thumbnail
Human phylogeny over the last 35 million years, showing the skulls of the major known fossil relatives and possible ancestors of modern humans. (Copyright © McGraw-Hill Education)

Image

from article Fossil humans

Result thumbnail
Face (cast) of Ouranopithecus macedoniensis from Xirochori, Greece, about 9.7 million years old. (Credit: L. Meeker; copyright © E. Delson)

Image

from article Fossil humans

Result thumbnail
Cranium of Sahelanthropus tchadensis from deposits about 7–6 million years old in Chad: (left) original fossil; (right) virtual reconstruction. (Copyright © Mission Paléoanthropologique Franco-Tchadienne)

Image

from article Fossil humans

Result thumbnail
Ardipithecus ramidus from the 4.4-million-year-old site of Aramis, Middle Awash Valley, Ethiopia: (left) reconstructed female skull next to female chimpanzee skull in oblique and right lateral views; (right) partial female skeleton. (Credit: David…

Image

from article Fossil humans

Result thumbnail
Digital recreation of the skeleton of Lucy, who lived about 3.2 MYA. This female australopith (Australopithecus afarensis) was discovered at the Ethiopian site of Hadar in 1974. (Credit: miv123/iStock/Getty Images)

Image

from article Fossil humans

Result thumbnail
Cranium of an adult (female?) Australopithecus africanus from Sterkfontein, South Africa, about 2.2 million years old. (Copyright © E. Delson)

Image

from article Fossil humans

Result thumbnail
Australopithecus sediba from Malapa, South Africa, dated about 1.8 million years old: (left) juvenile male and adult female partial skeletons; (right) juvenile (male?) cranium in frontal and left lateral views. (Copyright © Lee Berger/Peter Schmid)

Image

from article Fossil humans

Result thumbnail
Fossil skull of Paranthropus boisei from East Africa. (Credit: Dinoton/Shutterstock)

Image

from article Fossil humans

Result thumbnail
Fossil skull of Homo habilis. (Credit: markchentx/Getty Images)

Image

from article Fossil humans

Result thumbnail
Partial skeleton of the "Turkana Boy," an adolescent male Homo erectus, from West Turkana, Kenya, about 1.5 million years old. (Copyright © National Museums of Kenya)

Image

from article Fossil humans

Result thumbnail
Crania and mandibles of Homo erectus from Dmanisi, Georgia, reveal diversity in a single sample dated about 1.7 MYA. (Copyright © Georgian National Museum)

Image

from article Fossil humans

Result thumbnail
Partial cranium of (female?) Homo erectus from Sambungmacan, Java, Indonesia, possibly dated between 500 and 100 KYA. (Credit: C. Tarka; copyright © E. Delson)

Image

from article Fossil humans

Result thumbnail
Crania (frontal view) of two male Homo neanderthalensis specimens about 60,000–50,000 years old: (left) cranium from Amud, Israel; (right) cranium from La Ferrassie, France. [Credit: C. Tarka; copyright © Musée de l'Homme (Paris)/Israel Antiquities…

Image

from article Forensic anthropology

Result thumbnail
Forensic anthropologists analyze clues from the human skeleton to assist in determining the identity of human remains as well as the circumstances surrounding the death of that individual. ( Credit: Getty Images/iStockphoto)

Image

from article Australopith

Result thumbnail
Geochronological distribution of hominin species. The scale at the bottom is in millions of years ago (MYA).

Image

from article Australopith

Result thumbnail
Lateral view of the Taung skull of Australopithecus africanus, the type specimen of Australopithecus and the first early hominid specimen to be discovered in Africa. (Courtesy of Frederick E. Grine)

Image

from article Australopith

Result thumbnail
Principal sites at which australopith fossils have been discovered in Chad, Ethiopia, Kenya, Tanzania, Malawi, and South Africa.

Image

from article Paleolithic

Result thumbnail
Relationship between time, hominid taxa, and major cultural developments during the Paleolithic.

Image

from article Paleolithic

Result thumbnail
Oldowan pebble tools from Bed I, Olduvai Gorge. (After M. D. Leakey, Olduvai Gorge, vol. 3, p. 27, Cambridge University Press, 1971)

Image

from article Paleolithic

Result thumbnail
Late Acheulean hand axes from England. (After D. A. Roe, The Lower and Middle Palaeolithic Periods in Britain, Routledge Kegan Paul, 1981)

Image

from article Paleolithic

Result thumbnail
Middle Paleolithic (Mousterian) flake tools from France. (After R. G. Klein, Ice-Age Hunters of the Ukraine, University of Chicago Press, 1973)

Image

from article Paleolithic

Result thumbnail
Upper Paleolithic flake and blade artifacts from the Ukraine. (After R. G. Klein, Ice-Age Hunters of the Ukraine, University of Chicago Press, 1973)

Image

from article Paleolithic

Result thumbnail
Upper Paleolithic art objects from the Ukraine. (After R. G. Klein, Ice-Age Hunters of the Ukraine, University of Chicago Press, 1973)

Image

from article Dendrochronology

Result thumbnail
Ring patterns showing complacent and sensitive ring series. (a) Climate has minimal effect on ring widths when trees have ample moisture every year. (b) Maximum ring-width variations occur on sites where growth is limited by factors that vary from…

Image

from article Dendrochronology

Result thumbnail
Core being taken from a tree with an increment borer. (Courtesy of Laboratory of Tree-Ring Research, University of Arizona)

Image

from article Dendrochronology

Result thumbnail
Chronology building. Chronologies are extended backward in time by matching patterns of wood samples whose ages overlap.

Image

from article Dendrochronology

Result thumbnail
Skeleton plot (top) from an idealized tree-ring sequence in a specimen (bottom). Ring widths are represented by vertical lines in inverse proportion; that is, tall lines represent narrow rings. An exceptionally wide ring is designated by the letter…

Image

from article Dendrochronology

Result thumbnail
Bristlecone pines, which attain ages of more than 4000 years, form the basis for the second longest chronology yet developed. (Courtesy of Laboratory of Tree-Ring Research, University of Arizona)

Image

from article Paleoindian

Result thumbnail
Location of some important North American Paleoindian sites during the late-Pleistocene Ice Age.

Image

from article Fossil primates

Result thumbnail
Representatives of living primate families.

Image

from article Fossil primates

Result thumbnail
Carpolestes simpsoni, a 55.5-million-year-old plesiadapiform from Wyoming. (a) Skeleton as recovered, laid out in approximate anatomical position. (b) Reconstruction in life stance on tree branch; elements in dark gray are known. (c) External…

Learn more about AccessScience

a female college student looking at the screen of her silver-cased laptop computer
Watch the YouTube video

flyer thumbnail

Download the flyerGet Adobe Acrobat Reader pdf icon