Streptaster
Streptaster is distinguished by the very high, long, and strongly curved ambulacra, all of which curve counterclockwise.
Species
Streptaster vorticellatus (Hall, 1866)
Occurrence: Southgate, Fairmount, Bellevue, Corryville, Arnheim, Waynesville, Liberty, Elkhorn
Reference: Bell, 1976; Bell, 1979
Includes S. septembrachiatus, S. reversata