Scientists discover evolutionary link to modern-day echinoderms, solving 30-year-old fossil mystery and showing a crucial evolutionary link between creatures of the Cambrian Period and animals including modern-day sea cucumbers

See the source article by following the link below:
Scientists discover evolutionary link to modern-day echinoderms, solving 30-year-old fossil mystery and showing a crucial evolutionary link between creatures of the Cambrian Period and animals including modern-day sea cucumbers