Stock Photo - Cystoidea or cystoids, extinct fossil echinoderms: Staurocystis quadrifasciata 1, Glyptosphaerites leuchtenbergi 2, Protocrinites fragum 3, Cystoblastus leuchtenbergi 4,5, Pseudocrinites bifasciatus 6, Echinoencrinites angulosus 7, Callocystites jewetti 8, Hemicosmites extraneus 9, Glyptocystites multiporus 10, Glyptocystites species 11, Cheirocrinus species 12, Caryocrinites ornatus 13, Agelacrinites hamiltonensis 14, and Streptaster vorticellatus 15. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.

Stock Photo: Cystoidea or cystoids, extinct fossil echinoderms: Staurocystis quadrifasciata 1, Glyptosphaerites leuchtenbergi 2, Protocrinites fragum 3.

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