<p>Seirocrinus subangularis (Miller, 1821) - fossil crinoid from the Jurassic of Germany. (CM 34210, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA)
</p><p>Crinoids (sea lilies) are sessile, benthic, filter-feeding, stalked echinoderms that are relatively common in the marine fossil record.  Crinoids are also a living group, but are relatively uncommon in modern oceans.  A crinoid is essentially a starfish-on-a-stick.  The stick, or stem, is composed of numerous stacked columnals, like small poker chips.  Stems and individual columnals are the most commonly encountered crinoid fossils in the field.
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<hr><p>Classification: Animalia, Echinodermata, Crinoidea, Articulata, Isocrinida, Pentacrinitidae
</p><p>Stratigraphy: Holzmaden Lagerstätte, Posidonia Shale, Toarcian Stage, upper Lower Jurassic
</p><p>Locality: unrecorded/undisclosed site at or near the town of Holzmaden, southwestern Germany
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<a rel="nofollow" class="external text" href="https://www.flickr.com/people/47445767@N05">James St. John</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jsjgeology/34966642214/">Seirocrinus subangularis (fossil crinoid) (Posidonia Shale, Lower Jurassic; Holzmaden area, Germany) 3</a>