Crinoids

 

Crinoids, or "sea lillies," from Holzmaden, Germany are highly desired for their exceptional preservation. Subtly shimmering pyrite inclusions impart a glowing presence to these fossilized animals, which are plant-like in appearance. Also appealing is the richly colored black-brown shale matrix of this locality. Remains of animals from the warm, shallow Jurassic seas, in the region now known as Germany, reflect the warm environment of the Earth 180 – 170 million years ago. Holzmaden crinoids floated on pieces of driftwood (sometimes seen preserved with the crinoid specimens), filter-feeding in the warm Jurassic sea. 

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Superb Sea Lily Wall (details)

Fine detail is seen in every feature of these Early Jurassic crinoids. Though they resemble plants, the animals were filter feeders, which attached to driftwood and floated in the shallow, warm seas of the period.