franzanth:Though sea stars and sea urchins are mostly known for their star or flower-like shapes, th
franzanth:Though sea stars and sea urchins are mostly known for their star or flower-like shapes, their earliest relatives like Helicoplacus had spiral body pattern instead. They lived half-buried under the slimy seafloor during a time when most animals couldn’t move much.—Tumblr is now blocked here so I won’t post often. Follow me elsewhere:Facebook · Instagram · Twitter · Ko-fi · Patreon · Shop -- source link