File:Hammerstone groove.jpg
Original file (2,048 × 1,365 pixels, file size: 377 KB, MIME type: image/jpeg)
Summary edit
A boulder discovered at the Cerutti Mastodon site thought to have been used by early humans as a hammerstone.
Licensing edit
| Description |
A boulder discovered at the Cerutti Mastodon site thought to have been used by early humans as a hammerstone. |
|---|---|
| Source |
The image appears on a website entitled, "Humans Lived in North America 130,000 Years Ago, Study Claims" at url=https://www.nytimes.com/2017/04/26/science/prehistoric-humans-north-america-california-nature-study.html?rref=collection%2Fcolumn%2FMatter&action=click&contentCollection=Science&module=Collection®ion=Marginalia&src=me&version=column&pgtype=article. |
| Date |
17 March 2016 |
| Author |
Tom Deméré/San Diego Natural History Museum |
| Rationale |
No free licensed or public domain alternatives known to exist to show a boulder discovered at the Cerutti Mastodon site thought to have been used by early humans as a hammerstone 130,000 years ago, about 2016. |
| Permission |
Fair Use |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:39, 10 June 2017 | | 2,048 × 1,365 (377 KB) | Marshallsumter (discuss | contribs) | A boulder discovered at the Cerutti Mastodon site thought to have been used by early humans as a hammerstone. Category:Archaeology images |
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