Crinoid - ROM2004_982_8

Crinoid fossil, Pycnocrinus altilis (Eckert), collected 1985


Geography: Canada, Ontario
Date: 1985
length of fossil=8; width of fossil=3 cm
    • Attributes
    • Objects
    • Taxonomy
    • Kingdom: Animalia
    • Phylum: Echinodermata
    • Class: Crinoidea
    • Order: Monobathrida
    • Family: Glyptocrinidae
    • Genus: Pycnocrinus
    • SpecificEpithet: altilis
Object number: 45098A
Not on view
DescriptionCrinoids, or sea lilies, are relatives of sea stars and sea urchins. Although sea lilies still exist today, they were much more common in the past and their remains are frequently found as fossils. The name sea lily comes from the fact that many types were attached by a stalk to the sea-floor. Early naturalists thought they were plants. The stalk and “head” (or body) of the crinoid are composed of countless small plates of calcite bound together by soft tissue. When the animal dies, the soft tissue rots and the individual plates are usually scattered. Occasionally a crinoid is buried whole and preserved intact.
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