File:Australopithecus afarensis footprint.jpg
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Summary
editDescriptionAustralopithecus afarensis footprint.jpg |
Cast of the "Laetoli footprints" -- the earliest known human footprints in the world, on display in the Hall of Human Origins in the Smithsonian Museum of Natural History in Washington, D.C. These footprints are those of Australopithecus afarensis. The entire footprint trail is 88 feet long and includes impressions left by two early humans. They were made 3.6 million years ago in Laetoli, Tanzania, when A. afarensis walked through wet volcanic ash. Paleontologist Mary Leakey found them in 1976, but they were not identified until Paul Abell did so in 1978. There are 70 footprints in total. Australopithecus afarensis is an extinct human ancestor that lived between 3.9 to 2.9 million years ago. It is more closely related to human beings that Australopithecus africanus, which also lived at about the same time. Australopithecus afarensis was discovered in the Afar region of Ethiopia (hence the name "afarensis") in November 1973. The genus name, "Australopithecus", comes from the Latin word australis (or "southern") and the Greek word pithekos ("ape"). The most famous find is a partial skeleton discovered on November 24, 1974. It was named named Lucy because the scientists who found it repeatedly played the song "Lucy in the Sky with Diamonds" in celebration. |
Date | |
Source |
Australopithecus afarensis footprint - Smithsonian Museum of Natural History - 2012-05-17
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Author | Tim from Washington, D.C., United States of America |
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This image, originally posted to Flickr, was reviewed on 19 October 2012 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:37, 19 October 2012 | 667 × 1,000 (400 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | Transferred from Flickr by User:FunkMonk using flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark II |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
ISO speed rating | 3,200 |
Date and time of data generation | 13:52, 17 May 2012 |
Lens focal length | 200 mm |
Width | 3,744 px |
Height | 5,616 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS5 Windows |
File change date and time | 19:14, 27 May 2012 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 13:52, 17 May 2012 |
Meaning of each component |
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APEX shutter speed | 6 |
APEX aperture | 5 |
APEX exposure bias | 0 |
Maximum land aperture | 4.75 APEX (f/5.19) |
Subject distance | 1.16 meters |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 08 |
DateTimeOriginal subseconds | 08 |
DateTimeDigitized subseconds | 08 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 3,849.2117888965 |
Focal plane Y resolution | 3,908.1419624217 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
GPS tag version | 0.0.2.2 |
Serial number of camera | 620305364 |
Lens used | 28-300mm |
Date metadata was last modified | 15:14, 27 May 2012 |
Unique ID of original document | 55417476590447089ACA22B7ABFA5FAE |