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  • Lalita Krish.,

    Crinoid fossils. Rock containing crinoid (or sea lily) fossils. These are Scyphocrinus elegans crinoids from the Silurian/Devonian period (about 440-360 million years ago). Crinoids are marine echinoderms that appear as early as the Ordovician period (500 million years ago). These crinoids have stalks by which they would attach themselves to the seabed, capturing food with feathery arms that formed a cup (seen at lower right and upper centre). Thousands of extinct crinoid species have been found

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Fossilized Crinoids at the Museum of Natural History in Washington, D.C. The word 'crinoid' comes from the Greek word krinon, for "lily", and eidos, "form." (Wiki)

Crinoid fossil... Is it pathetic that I knew what this was before I read it? Stupid Earth Science.

Crinoid fossils are sea lilies and feather stars that attached to the sea bottom, filtered food particles, and boomed in the Paleozoic period when plants dominated the earth. Most of the coal deposits found in the world today are found in association to Pyrite (decomposing plant and animal life + oxidation) due to high quartz and sulfur levels of 60% or more. Crinoids are found in Limestone.

Crinoid: animal, same family as starfish, been around for 450 millions years

Crinoid Fossil (star, victory stone)

Crinoid fossil, is the inside of the stem of a ancient sea flower