Part of the calcareous ring of Eupentacta fraudatrix. RDIR, right dorsal interradial plate; RVR, right ventral radial plate; RVIR, right ventral interradial plate; MVR, medioventral radial plate; LVIR, left ventral interradial plate; LVR, left ventral radial plate (from Baranova 1971).

 
 
  Part of: Turanov SV, Smirnov AV, Kartavtsev YuPh (2024) Taxonomic position of holothurian Eupentacta fraudatrix (Echinodermata, Holothuroidea). ZooKeys 1197: 237-248. https://doi.org/10.3897/zookeys.1197.117752