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2003-09-30 10:42:27 ET
Crinoids - The most common fossils found in the chert gravels are of crinoids. Although they are called "sea lilies," the crinoids belong to the phyla Echinodermata, a primary group of animals including sea urchins and starfishes. A typical crinoid consists cup-like body, called a "calyx," from which tentacle-like arms radiated from the rim of the cup. The body, or calyx, of a typical crinoid is attached to the sea floor by a long, segmented stalk that ends in a holdfast that anchors it in the seafloor or to some object on it. Both the body and stalk are composed of interlocking plates. The circular to star-shaped plates that compose the segmented stalk are the most common fossil found in the chert gravels.
its still cool though...lol |
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