Range Brittle star
brittle star in kona, hawaii
ophiopetra lithographica lower hienheim beds (lower tithonian, upper jurassic) near regensburg, germany
the ophiuroids diverged in ordovician, 500 million years ago. ophiuroids can found today in of major marine provinces, poles tropics. basket stars confined deeper parts of range; ophiuroids known abyssal (>6000 m) depths. however, brittle stars common members of reef communities, hide under rocks , within other living organisms. few ophiuroid species can tolerate brackish water, ability otherwise unknown among echinoderms. brittle star s skeleton made of embedded ossicles.
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