![Prehistoric human tool, Quartzite biface on black isolated background, 500.000 years old. Photos | Adobe Stock Prehistoric human tool, Quartzite biface on black isolated background, 500.000 years old. Photos | Adobe Stock](https://as2.ftcdn.net/v2/jpg/01/41/73/31/1000_F_141733199_hab6tfaYVP0DuGfq3RyTjfOZMjUaGlzo.jpg)
Prehistoric human tool, Quartzite biface on black isolated background, 500.000 years old. Photos | Adobe Stock
![Biface, Acheulean, 700,000200,000 B.C., Acheulean, Quartzite, H. 9 1/2 in. ( 24 cm); W. 5 5/16 in. (13.1 cm); D. 1 1/16 in. (2.7 cm); Wt. 1 lb. 13 oz. (833 g), Tools. - Album alb4917458 Biface, Acheulean, 700,000200,000 B.C., Acheulean, Quartzite, H. 9 1/2 in. ( 24 cm); W. 5 5/16 in. (13.1 cm); D. 1 1/16 in. (2.7 cm); Wt. 1 lb. 13 oz. (833 g), Tools. - Album alb4917458](https://www.album-online.com/photos/prev/ZmI3YzI1MA/album_alb4917458.jpg)
Biface, Acheulean, 700,000200,000 B.C., Acheulean, Quartzite, H. 9 1/2 in. ( 24 cm); W. 5 5/16 in. (13.1 cm); D. 1 1/16 in. (2.7 cm); Wt. 1 lb. 13 oz. (833 g), Tools. - Album alb4917458
![Biface, commonly referred to as a hand ax | Lower Paleolithic Period | The Metropolitan Museum of Art Biface, commonly referred to as a hand ax | Lower Paleolithic Period | The Metropolitan Museum of Art](https://images.metmuseum.org/CRDImages/eg/original/06.322.136_EGDP013180.jpg)
Biface, commonly referred to as a hand ax | Lower Paleolithic Period | The Metropolitan Museum of Art
![6 Bifacial tools from open air site at Il'skaya 1. (Sources: [1-5],... | Download Scientific Diagram 6 Bifacial tools from open air site at Il'skaya 1. (Sources: [1-5],... | Download Scientific Diagram](https://www.researchgate.net/publication/260361446/figure/fig10/AS:639873266495489@1529569083351/Bifacial-tools-from-open-air-site-at-Ilskaya-1-Sources-1-5-Zamiatnin-1961-6-12.png)
6 Bifacial tools from open air site at Il'skaya 1. (Sources: [1-5],... | Download Scientific Diagram
![The assemblages with bifacial tools in Eurasia (first part). What is going on in the West? Data on western and southern Europe and the Levant - ScienceDirect The assemblages with bifacial tools in Eurasia (first part). What is going on in the West? Data on western and southern Europe and the Levant - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S1631068315002109-gr4.jpg)
The assemblages with bifacial tools in Eurasia (first part). What is going on in the West? Data on western and southern Europe and the Levant - ScienceDirect
![Culture matérielle - Dernières nouvelles de la Préhistoire - Il était une fois le biface en Europe... - Inrap - Magazine Culture matérielle - Dernières nouvelles de la Préhistoire - Il était une fois le biface en Europe... - Inrap - Magazine](https://www.inrap.fr/magazine/userdata/c_bloc/2/2160/2160_vignette_Plus-vieux-bifaces.jpg)