The Echinoid Directory

Pourtalesia jeffreysi Thomson, 1873

Digestive tract & gonads, lateral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2).
Digestive tract & gonads, lateral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2).
Digestive tract, oral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2).