Lenicyamidia Brunnschweiler, 1962

Mooi, Rich, Kroh, Andreas & Srivastava, Dinesh K., 2014, Phylogenetic re-evaluation of fossil and extant micro-echinoids with revision of Tridium, Cyamidia, and Lenicyamidia (Echinoidea: Clypeasteroida), Zootaxa 3857 (4), pp. 501-526 : 520

Genus Lenicyamidia Brunnschweiler, 1962

Type species. Lenicyamidia compta Brunnschweiler, 1962, p. 165 , by original designation.

Emended diagnosis. Small fibulariids with an antero-posteriorly elongated periproct, and a distinct naked medial zone on the oral surface, with the tubercles bilaterally arranged left and right of it.

Remarks. Like Cyamidia this taxon differs from the type genus Fibularia in having low ambulacral plates at the ambitus and an elongate periproct. It differs from Cyamidia mainly by its distinctive oral tuberculation, which is similar to that seen in Leniechinus , Lenita , and some cassidulids. In contrast to the former two, however, the enlarged tubercles are not distinctly invaginated, but have only moderately sunken areoles.