Species: Seirocrinus subangularis
Formation: Posidonia Shale
Location: Holzmaden, Baden-Wuerttemberg, Germany
Age: Lower Jurassic (approximately 180 million years old)
slab measures approx 67 x 35.5 x 1.25 inches; largest crown measures 12 inches
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Crinoids are marine animals belonging to the phylum Echinodermata and the class Crinoidea. They are an ancient fossil group that first appeared in the seas of the mid Cambrian, about 300 million years before dinosaurs. They flourished in the Palaeozoic and Mesozoic eras and some survive to the present day.