The oldest records of Polyxenida (Myriapoda, Diplopoda): new discoveries from the Cretaceous ambers of Lebanon and France Author Duy-Jacquemin, Monique Nguyen Histoire naturelle, Département Systématique et Évolution, Arthropodes, CP 53, 61 rue Buffon, F- 75231 Paris cedex 05 (France) monguyen @ mnhn. fr monguyen@mnhn.fr Author Azar, Dany Lebanese University, Faculty of Science II, Biology Department, BP 26110217 Fanar-Matn (Lebanon) and Department, Saint-Joseph University, Campus of Sciences and Technology, Mar Roukos (Mkalles), BP 11 - 1514 Beirut (Lebanon) azar @ mnhn. fr azar@mnhn.fr text Geodiversitas 2004 26 4 631 641 journal article 10.5281/zenodo.4665318 1638-9395 4665318 Genus Electroxenus n. gen. TYPE SPECIES . — Electroxenus jezzinensis n. sp. , by present designation. New Polyxenida ( Myriapoda , Diplopoda ) in Cretaceous amber FIG. 1. — Electroxenus jezzinensis n. gen., n. sp. , holotype adult body length: 3.10 mm (JS 231/1), Acra collection; A , lateral view; B , dorsal view. ETYMOLOGY. — A combination of electron, meaning amber in Greek and xenus, suffix used in polyxenids. DIAGNOSIS. — Head: six to eight ocelli; antenna with eight articles; three sensilla basiconica or more on the seventh antennal article, four or more on the sixth. Lateral expansion of gnathochilarial palp with at least 17 sensilla. Trunk: tergal trichomes grouped into two separate, oval clusters with an additional posterior row, subdivided in its middle. Presence of a spine on tarsus II. Telotarsus with posterior lamellate process. Telson: two dorsolateral penicils of hooked trichomes, joined side by side, dorsally.