The Echinoid Directory

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Echinolampas [Planilampas] sternopatela Agassiz & Clark, 1907. Drawing of part of petal II and a single phyllode. From T. Mortensen. 1948. A monograph of the Echinoidea: 4 (1): Holectypoida, Cassiduloida. Reitzel, Copenhagen, 363 pp., 14 pls (text-figs 266b & 267c).