Pentametrocrinidae
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Pentametrocrinidae is a family of
echinoderms An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larv ...
belonging to the order
Comatulida Comatulida is an order of crinoids Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, c ...
. Genera: * '' Pentametrocrinus'' Clark, 1908 * '' Thaumatocrinus'' Carpenter, 1883


References

Comatulida Echinoderm families {{crinoidea-stub