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Choose a picture from our Images Dated 28th May 2003 Collection for your Wall Art and Photo Gifts
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Isocrinus robustus, a fossil crinoidThe stalked crinoid Isocrinus robustus, 14 cm tall, from the Lower Jurassic of Gloucestershire, England, showing the calyx and arms
Actinocrinites sp. a fossil crinoidActinocrinites has a calyx which is conical and elongated and a rigid, domed tegmen made of numberous small plates. The calyx is monocyclic, I.e. a basal circle of plates supports the radial circlet