Rhinoclavis abbasi is not synonymous according to Thach:
Limpalaer (2023) wrote everything in his article but did not show any similarity between Rhinoclavis abbasi Thach, 2022 and Clavocerithium taeniatum (Quoy & Gaimard, 1834). It is regrettable that he got four specimens but did not know that they were not described! Rhinoclavis abbasi is distinguished mainly from Clavocerithium taeniatum in following characters: (1) spire more slowly tapering with concave sides, (2) body whorl shorter and broader, (3) presence of many curved axial ribs which are well seen at body whorl, (4) base sculptured with many strong ribs, (5) early whorls sculptured with more numerous rows of sharp granules, (6) presence of many granules at median whorls, (7) sutures less oblique, (8) anal canal more pointed, (9) anterior canal shorter. These numerous differences are sufficient to separate them into two species. Can Limpalaer show in paired photo the similarities between Rhinoclavis abbasi and Clavocerithium taeniatum to prove that his comment is correct? I do not agree on this synonymisation in MolluscaBase.