SEA-URCHIN
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(JURASSIC PERIOD)
Common ancestors of the modern sea-animals, sand dollars, and cucumbers, these Echinoderms were once scattered all over prehistoric sea floors. When it was alive, the body would have been covered with moveable spines which extruded from the small holes and openings.
Common ancestors of the modern sea-animals, sand dollars, and cucumbers, these Echinoderms were once scattered all over prehistoric sea floors. When it was alive, the body would have been covered with moveable spines which extruded from the small holes and openings.