A bold claim about the origins of the echinoderms is based on newly discovered fossils from China. But many pieces are still missing from this part of the fragmented puzzle of life's evolutionary ...
Echinoderms are one of the most highly derived groups of animals with many species as significant components of several marine communities. They’re classified by three fundamental shared ...
Most sand dollar larvae metamorphosed within 7 weeks, but 6 of 170 (3.5%) formed a hollow bud near the future juvenile mouth (results not shown). Once separated, the evenly ciliated buds developed ...
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