13. The same is true for Roman Egypt: during the 2009 excavation campaign at Karanis in the Fayum carried out by the Universities of Groningen and Los Angeles under the direction of Prof. R. Cappers and Prof. W. Wendrich, four double-sided comb fragments were found, three of which are imported combs made of boxwood (inv. nos. 14718, 15296, 16544), while the fourth (inv. no. 14207) is a locally manufactured product made from olive (Olea europea), a tree common in the area. Pers. comm. C. Vermeeren (BIAX Consult, Zaandam).