Calyx (zoology) | definition of Calyx (zoology) by Medical dictionary
crinoid (redirected from Calyx (zoology))
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crinoid any echinoderm of the class Crinoidea, including the present-day feather stars and sea lilies. They are common fossils from the CAMBRIAN PERIOD throughout geological history, and are mainly sedentary. Antodon is free-living in British waters.