Echinarachnius Gray 1825

Echinarachnius is a genus of sand dollars, belonging to the family Echinarachniidae . ^[1]

Species of Echinarachnius have been around since the Pliocene epoch.

Species

• †Echinarachnius alaskensis Durham, 1957
• Echinarachnius asiaticus Michelin, 1859
• †Echinarachnius humilis Nisiyama, 1968
• †Echinarachnius kewi Grant & Eaton in Eaton, Grant & Allen, 1941
• †Echinarachnius naganoensis Morishita, 1953
• Echinarachnius parma (Lamarck, 1816)
• †Echinarachnius rumoensis Hayasaka & Shibata, 1952
• †Echinarachnius subtumidus Nisiyama & Hashimoto, 1950

References