The Echinoid Directory
Pourtalesia jeffreysi Thomson, 1873 |
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Digestive tract & gonads, lateral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2). |
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| Digestive tract & gonads, lateral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2). | |
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| Digestive tract, oral view, from Mortensen, T. 1907. Echinoidea (Part II). The Danish Ingolf-Expedition 4(2). | |