Archaeochionelasmus nekvasilovae gen. et sp. nov. (Cirripedia, Balanomorpha, Chionelasmatoidea) from the Bohemian Cretaceous Basin (Czech Republic): the first bona fide Cretaceous neobalanoform Author Kočí, Tomáš Author Veselská, Martina Kočová Author Newman, William A. Author Buckeridge, John S. Author Sklenář, Jan text Zootaxa 2017 4294 2 181 196 journal article 32652 10.11646/zootaxa.4294.2.3 820a3d60-33c3-4934-9ce2-0ebef4de8532 1175-5326 831790 2D289A54-7600-4677-B487-84F91A4719CA Family Chionelasmatidae Buckeridge, 1983 (Upper Cretaceous–Recent) Archaeochionelasmus KOČÍ , BUCKERIDGE & NEWMAN gen. nov. Pl. 1, figs A–F; Pl. 2, figs A–H; Text-figs 3, 6 Diagnosis. Low conical neobalanoform with a six-plated wall comprised of a carina (C) and a rostrum (R) plus paired carinolatera (CL1) and rostrolatera (RL) and at least one whorl of basal imbricating plates (IPs); pseudo-radii present on overlapping margins of RL and CL1; alae unexposed, rostrolatera perhaps included in the sheath; no trace of a calcareous basis. Etymology. Archaeo (Greek arkhaio- ) = early, or before Chionelasmus . Stratum typicum. Upper Cenomanian, Korycany Member, Bohemian Cretaceous Basin.