The Echinoid Directory

Family Protoscutellidae Durham, 1955, p. 153

Diagnosis	Scutelliforms with: five gonopores; food grooves simple or bifurcating at edge of first post-basicoronal circlet, not trifurcating.
Range	Middle to Upper Eocene; North America.

Diagnosis

five gonopores;
food grooves simple or bifurcating at edge of first post-basicoronal circlet, not trifurcating.

Range

Middle to Upper Eocene; North America.