formation | Command (military formation) | Elliot Formation | Qasr-e Shirin | Lance Formation | Crato Formation | Chinle Formation | Two Medicine Formation | Tamayama Formation | Missing Man Formation (band) | Missing Man Formation | Marcellus Formation | Kirkwood Formation | Gettysburg Formation | Clarens Formation | Whitby Mudstone Formation | Tunbridge Wells Sand Formation | Santana Formation | Qasr el-'Aguz | Qasr al-Nil Bridge | Phalanx formation | phalanx formation | Mahantango Formation | Leduc Formation | Identity formation | Hanson Formation | Formation (stratigraphy) | formation (stratigraphy) | Formation | Centre International de Formation Européenne |
Qasr el-'Aguz is the modern name of the ancient Egyptian site, not far from Thebes, of a temple of the Pharaonic god Thoth
The genus was first described by Charles William Andrews in 1901 when Andrews named a new species of Tomistoma, T. africanum, on the basis of a specimen found from an outcrop of the Qasr el-Sagha Formation in Egypt, about 20 miles northwest of Faiyum, dating back to the Priabonian stage of the late Eocene 37.2 to 33.9 million years ago.