Trochodota

Ludwig, 1892

7 species

Tentacles 10, digits 2-6 on each side. Polian vesicle single. Stone canal single. Calcareous ring of 10 slender pieces radials not perforated. Gustatory organs always (?) present on tentacles. Deposits include sigmoid hooks, scattered or arranged into circles or little groups, with these are associated wheels, scattered, never gathered into wheel papillae. (Clark, 1907)

Tentacles 10. Digits 2-6 on each side. Polian vesicle single. Calcareous ring of 10 pieces, radials not perforated. Calcareous deposits, sigmoid hooks scattered or arranged into groups and wheels scattered, never grouped into papillae. (Pawson, 1968)

Chiridotid genus with wheels and sigmoid ossicles present scattered or in groups, wheels with serrations on the inner margin in well defined groups; tentacles 10. (Rowe, 1976)