Clipart tagged: ‘primitive form’

Echinopaedia is the name for the early or larval stages of echinoderms like sea stars and sea urchins. "A, common primitive form of Echinodermata, whence B, B', a vermiform holothurid, and C, C', a pluteiform ophiurid or echinid (pluteus) larva are derived: a, mouth; b, stomach; c, intestine; d, anus; e, ciliated band." -Whitney, 1911

Echinopaedia

Echinopaedia is the name for the early or larval stages of echinoderms like sea stars and sea urchins.…

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